11 files changed, 199 insertions, 204 deletions
diff --git a/phpBB/language/en/acp/board.php b/phpBB/language/en/acp/board.php
index ce15dfefb4..f786374ba6 100644
--- a/phpBB/language/en/acp/board.php
+++ b/phpBB/language/en/acp/board.php
@@ -367,6 +367,8 @@ $lang = array_merge($lang, array(
 	'LOAD_JQUERY_CDN_EXPLAIN'		=> 'If this setting is enabled, jQuery will be served from Google’s AJAX API CDN instead of the copy included with phpBB on your server. If the CDN fails, phpBB will attempt to fall back to the copy included with phpBB.',
 	'LOAD_USER_ACTIVITY'			=> 'Show user’s activity',
 	'LOAD_USER_ACTIVITY_EXPLAIN'	=> 'Displays active topic/forum in user profiles and user control panel. It is recommended to disable this on boards with more than one million posts.',
+	'READ_NOTIFICATION_EXPIRE_DAYS'	=> 'Read Notification Expiration',
+	'READ_NOTIFICATION_EXPIRE_DAYS_EXPLAIN' => 'Number of days that will elapse before a read notification will automatically be deleted. Set this value to 0 to make notifications permanent.',
 	'RECOMPILE_STYLES'				=> 'Recompile stale style components',
 	'RECOMPILE_STYLES_EXPLAIN'		=> 'Check for updated style components on filesystem and recompile.',
 	'YES_ANON_READ_MARKING'			=> 'Enable topic marking for guests',
@@ -390,10 +392,16 @@ $lang = array_merge($lang, array(
 
 // Auth settings
 $lang = array_merge($lang, array(
-	'ACP_AUTH_SETTINGS_EXPLAIN'	=> 'phpBB supports authentication plug-ins, or modules. These allow you determine how users are authenticated when they log into the board. By default three plug-ins are provided; DB, LDAP and Apache. Not all methods require additional information so only fill out fields if they are relevant to the selected method.',
+	'ACP_AUTH_SETTINGS_EXPLAIN'	=> 'phpBB supports authentication plug-ins, or modules. These allow you determine how users are authenticated when they log into the board. By default four plug-ins are provided: DB, LDAP, Apache, and OAuth. Not all methods require additional information so only fill out fields if they are relevant to the selected method.',
 
 	'AUTH_METHOD'				=> 'Select an authentication method',
 
+	'AUTH_PROVIDER_OAUTH_ERROR_ELEMENT_MISSING'	=> 'Both the key and secret of each enabled OAuth service provider must be provided. Only one was provided for an OAuth service provider.',
+	'AUTH_PROVIDER_OAUTH_EXPLAIN'				=> 'Each OAuth provider requires a unique secret and key in order to authenticate with the external server.<br />These should be supplied by the OAuth service when you register your website with them and should be entered exactly as provided to you.<br />Any service that does not have both a key and a secret entered here will not be available for use by the forum users.',
+	'AUTH_PROVIDER_OAUTH_KEY'					=> 'Key',
+	'AUTH_PROVIDER_OAUTH_TITLE'					=> 'OAuth',
+	'AUTH_PROVIDER_OAUTH_SECRET'				=> 'Secret',
+
 	'APACHE_SETUP_BEFORE_USE'	=> 'You have to setup apache authentication before you switch phpBB to this authentication method. Keep in mind that the username you use for apache authentication has to be the same as your phpBB username. Apache authentication can only be used with mod_php (not with a CGI version) and safe_mode disabled.',
 
 	'LDAP_DN'						=> 'LDAP base <var>dn</var>',
@@ -427,6 +435,10 @@ $lang = array_merge($lang, array(
 	'FORCE_SERVER_VARS_EXPLAIN'	=> 'If set to yes the server settings defined here will be used in favour of the automatically determined values.',
 	'ICONS_PATH'				=> 'Post icons storage path',
 	'ICONS_PATH_EXPLAIN'		=> 'Path under your phpBB root directory, e.g. <samp>images/icons</samp>.',
+	'MOD_REWRITE_ENABLE'		=> 'Enable URL Rewriting',
+	'MOD_REWRITE_ENABLE_EXPLAIN' => 'When enabled, URLs containing ’app.php’ will be rewritten to remove the filename (i.e. app.php/foo will become /foo). <strong>Apache server’s mod_rewrite module is required for this functionality to work; if this option is enabled without mod_rewrite support, URLs on your board may be broken.</strong>',
+	'MOD_REWRITE_DISABLED'		=> 'The <strong>mod_rewrite</strong> module on your Apache web server is disabled. Enable the module or contact your web hosting provider if you wish to enable this feature.',
+	'MOD_REWRITE_INFORMATION_UNAVAILABLE' => 'We are unable to determine whether or not this server supports URL rewriting. This setting may be enabled but if URL rewriting is not available, paths generated by this board (such as for use in links) may be broken. Contact your web hosting provider if you are unsure whether or not you can safely enable this feature.',
 	'PATH_SETTINGS'				=> 'Path settings',
 	'RANKS_PATH'				=> 'Rank image storage path',
 	'RANKS_PATH_EXPLAIN'		=> 'Path under your phpBB root directory, e.g. <samp>images/ranks</samp>.',
diff --git a/phpBB/language/en/acp/permissions_phpbb.php b/phpBB/language/en/acp/permissions_phpbb.php
index 98679ad544..5ea151f6ea 100644
--- a/phpBB/language/en/acp/permissions_phpbb.php
+++ b/phpBB/language/en/acp/permissions_phpbb.php
@@ -33,209 +33,175 @@ if (empty($lang) || !is_array($lang))
 // in a url you again do not need to specify an order e.g., 'Click %sHERE%s' is fine
 
 /**
-*	MODDERS PLEASE NOTE
+*	EXTENSION-DEVELOPERS PLEASE NOTE
 *
-*	You are able to put your permission sets into a separate file too by
-*	prefixing the new file with permissions_ and putting it into the acp
-*	language folder.
-*
-*	An example of how the file could look like:
-*
-*	<code>
-*
-*	if (empty($lang) || !is_array($lang))
-*	{
-*		$lang = array();
-*	}
-*
-*	// Adding new category
-*	$lang['permission_cat']['bugs'] = 'Bugs';
-*
-*	// Adding new permission set
-*	$lang['permission_type']['bug_'] = 'Bug Permissions';
-*
-*	// Adding the permissions
-*	$lang = array_merge($lang, array(
-*		'acl_bug_view'		=> array('lang' => 'Can view bug reports', 'cat' => 'bugs'),
-*		'acl_bug_post'		=> array('lang' => 'Can post bugs', 'cat' => 'post'), // Using a phpBB category here
-*	));
-*
-*	</code>
+*	You are able to put your permission sets into your extension.
+*	The permissions logic should be added via the 'core.permissions' event.
+*	You can easily add new permission categories, types and permissions, by
+*	simply merging them into the respective arrays.
+*	The respective language strings should be added into a language file, that
+*	start with 'permissions_', so they are automatically loaded within the ACP.
 */
 
-// Define categories and permission types
 $lang = array_merge($lang, array(
-	'permission_cat'	=> array(
-		'actions'		=> 'Actions',
-		'content'		=> 'Content',
-		'forums'		=> 'Forums',
-		'misc'			=> 'Misc',
-		'permissions'	=> 'Permissions',
-		'pm'			=> 'Private messages',
-		'polls'			=> 'Polls',
-		'post'			=> 'Post',
-		'post_actions'	=> 'Post actions',
-		'posting'		=> 'Posting',
-		'profile'		=> 'Profile',
-		'settings'		=> 'Settings',
-		'topic_actions'	=> 'Topic actions',
-		'user_group'	=> 'Users &amp; Groups',
-	),
-
-	// With defining 'global' here we are able to specify what is printed out if the permission is within the global scope.
-	'permission_type'	=> array(
-		'u_'			=> 'User permissions',
-		'a_'			=> 'Admin permissions',
-		'm_'			=> 'Moderator permissions',
-		'f_'			=> 'Forum permissions',
-		'global'		=> array(
-			'm_'			=> 'Global moderator permissions',
-		),
-	),
+	'ACL_CAT_ACTIONS'		=> 'Actions',
+	'ACL_CAT_CONTENT'		=> 'Content',
+	'ACL_CAT_FORUMS'		=> 'Forums',
+	'ACL_CAT_MISC'			=> 'Misc',
+	'ACL_CAT_PERMISSIONS'	=> 'Permissions',
+	'ACL_CAT_PM'			=> 'Private messages',
+	'ACL_CAT_POLLS'			=> 'Polls',
+	'ACL_CAT_POST'			=> 'Post',
+	'ACL_CAT_POST_ACTIONS'	=> 'Post actions',
+	'ACL_CAT_POSTING'		=> 'Posting',
+	'ACL_CAT_PROFILE'		=> 'Profile',
+	'ACL_CAT_SETTINGS'		=> 'Settings',
+	'ACL_CAT_TOPIC_ACTIONS'	=> 'Topic actions',
+	'ACL_CAT_USER_GROUP'	=> 'Users &amp; Groups',
 ));
 
 // User Permissions
 $lang = array_merge($lang, array(
-	'acl_u_viewprofile'	=> array('lang' => 'Can view profiles, memberlist and online list', 'cat' => 'profile'),
-	'acl_u_chgname'		=> array('lang' => 'Can change username', 'cat' => 'profile'),
-	'acl_u_chgpasswd'	=> array('lang' => 'Can change password', 'cat' => 'profile'),
-	'acl_u_chgemail'	=> array('lang' => 'Can change email address', 'cat' => 'profile'),
-	'acl_u_chgavatar'	=> array('lang' => 'Can change avatar', 'cat' => 'profile'),
-	'acl_u_chggrp'		=> array('lang' => 'Can change default usergroup', 'cat' => 'profile'),
-	'acl_u_chgprofileinfo'	=> array('lang' => 'Can change profile field information', 'cat' => 'profile'),
-
-	'acl_u_attach'		=> array('lang' => 'Can attach files', 'cat' => 'post'),
-	'acl_u_download'	=> array('lang' => 'Can download files', 'cat' => 'post'),
-	'acl_u_savedrafts'	=> array('lang' => 'Can save drafts', 'cat' => 'post'),
-	'acl_u_chgcensors'	=> array('lang' => 'Can disable word censors', 'cat' => 'post'),
-	'acl_u_sig'			=> array('lang' => 'Can use signature', 'cat' => 'post'),
-
-	'acl_u_sendpm'		=> array('lang' => 'Can send private messages', 'cat' => 'pm'),
-	'acl_u_masspm'		=> array('lang' => 'Can send messages to multiple users', 'cat' => 'pm'),
-	'acl_u_masspm_group'=> array('lang' => 'Can send messages to groups', 'cat' => 'pm'),
-	'acl_u_readpm'		=> array('lang' => 'Can read private messages', 'cat' => 'pm'),
-	'acl_u_pm_edit'		=> array('lang' => 'Can edit own private messages', 'cat' => 'pm'),
-	'acl_u_pm_delete'	=> array('lang' => 'Can remove private messages from own folder', 'cat' => 'pm'),
-	'acl_u_pm_forward'	=> array('lang' => 'Can forward private messages', 'cat' => 'pm'),
-	'acl_u_pm_emailpm'	=> array('lang' => 'Can email private messages', 'cat' => 'pm'),
-	'acl_u_pm_printpm'	=> array('lang' => 'Can print private messages', 'cat' => 'pm'),
-	'acl_u_pm_attach'	=> array('lang' => 'Can attach files in private messages', 'cat' => 'pm'),
-	'acl_u_pm_download'	=> array('lang' => 'Can download files in private messages', 'cat' => 'pm'),
-	'acl_u_pm_bbcode'	=> array('lang' => 'Can use BBCode in private messages', 'cat' => 'pm'),
-	'acl_u_pm_smilies'	=> array('lang' => 'Can use smilies in private messages', 'cat' => 'pm'),
-	'acl_u_pm_img'		=> array('lang' => 'Can use [img] BBCode tag in private messages', 'cat' => 'pm'),
-	'acl_u_pm_flash'	=> array('lang' => 'Can use [flash] BBCode tag in private messages', 'cat' => 'pm'),
-
-	'acl_u_sendemail'	=> array('lang' => 'Can send emails', 'cat' => 'misc'),
-	'acl_u_sendim'		=> array('lang' => 'Can send instant messages', 'cat' => 'misc'),
-	'acl_u_ignoreflood'	=> array('lang' => 'Can ignore flood limit', 'cat' => 'misc'),
-	'acl_u_hideonline'	=> array('lang' => 'Can hide online status', 'cat' => 'misc'),
-	'acl_u_viewonline'	=> array('lang' => 'Can view hidden online users', 'cat' => 'misc'),
-	'acl_u_search'		=> array('lang' => 'Can search board', 'cat' => 'misc'),
+	'ACL_U_VIEWPROFILE'	=> 'Can view profiles, memberlist and online list',
+	'ACL_U_CHGNAME'		=> 'Can change username',
+	'ACL_U_CHGPASSWD'	=> 'Can change password',
+	'ACL_U_CHGEMAIL'	=> 'Can change email address',
+	'ACL_U_CHGAVATAR'	=> 'Can change avatar',
+	'ACL_U_CHGGRP'		=> 'Can change default usergroup',
+	'ACL_U_CHGPROFILEINFO'	=> 'Can change profile field information',
+
+	'ACL_U_ATTACH'		=> 'Can attach files',
+	'ACL_U_DOWNLOAD'	=> 'Can download files',
+	'ACL_U_SAVEDRAFTS'	=> 'Can save drafts',
+	'ACL_U_CHGCENSORS'	=> 'Can disable word censors',
+	'ACL_U_SIG'			=> 'Can use signature',
+
+	'ACL_U_SENDPM'		=> 'Can send private messages',
+	'ACL_U_MASSPM'		=> 'Can send messages to multiple users',
+	'ACL_U_MASSPM_GROUP'=> 'Can send messages to groups',
+	'ACL_U_READPM'		=> 'Can read private messages',
+	'ACL_U_PM_EDIT'		=> 'Can edit own private messages',
+	'ACL_U_PM_DELETE'	=> 'Can remove private messages from own folder',
+	'ACL_U_PM_FORWARD'	=> 'Can forward private messages',
+	'ACL_U_PM_EMAILPM'	=> 'Can email private messages',
+	'ACL_U_PM_PRINTPM'	=> 'Can print private messages',
+	'ACL_U_PM_ATTACH'	=> 'Can attach files in private messages',
+	'ACL_U_PM_DOWNLOAD'	=> 'Can download files in private messages',
+	'ACL_U_PM_BBCODE'	=> 'Can use BBCode in private messages',
+	'ACL_U_PM_SMILIES'	=> 'Can use smilies in private messages',
+	'ACL_U_PM_IMG'		=> 'Can use [img] BBCode tag in private messages',
+	'ACL_U_PM_FLASH'	=> 'Can use [flash] BBCode tag in private messages',
+
+	'ACL_U_SENDEMAIL'	=> 'Can send emails',
+	'ACL_U_SENDIM'		=> 'Can send instant messages',
+	'ACL_U_IGNOREFLOOD'	=> 'Can ignore flood limit',
+	'ACL_U_HIDEONLINE'	=> 'Can hide online status',
+	'ACL_U_VIEWONLINE'	=> 'Can view hidden online users',
+	'ACL_U_SEARCH'		=> 'Can search board',
 ));
 
 // Forum Permissions
 $lang = array_merge($lang, array(
-	'acl_f_list'		=> array('lang' => 'Can see forum', 'cat' => 'actions'),
-	'acl_f_read'		=> array('lang' => 'Can read forum', 'cat' => 'actions'),	
-	'acl_f_search'		=> array('lang' => 'Can search the forum', 'cat' => 'actions'),
-	'acl_f_subscribe'	=> array('lang' => 'Can subscribe forum', 'cat' => 'actions'),
-	'acl_f_print'		=> array('lang' => 'Can print topics', 'cat' => 'actions'),	
-	'acl_f_email'		=> array('lang' => 'Can email topics', 'cat' => 'actions'),	
-	'acl_f_bump'		=> array('lang' => 'Can bump topics', 'cat' => 'actions'),
-	'acl_f_user_lock'	=> array('lang' => 'Can lock own topics', 'cat' => 'actions'),
-	'acl_f_download'	=> array('lang' => 'Can download files', 'cat' => 'actions'),	
-	'acl_f_report'		=> array('lang' => 'Can report posts', 'cat' => 'actions'),
-
-	'acl_f_post'		=> array('lang' => 'Can start new topics', 'cat' => 'post'),
-	'acl_f_sticky'		=> array('lang' => 'Can post stickies', 'cat' => 'post'),
-	'acl_f_announce'	=> array('lang' => 'Can post announcements', 'cat' => 'post'),
-	'acl_f_reply'		=> array('lang' => 'Can reply to topics', 'cat' => 'post'),
-	'acl_f_edit'		=> array('lang' => 'Can edit own posts', 'cat' => 'post'),
-	'acl_f_delete'		=> array('lang' => 'Can permanently delete own posts', 'cat' => 'post'),
-	'acl_f_softdelete'  => array('lang' => 'Can soft delete own posts<br /><em>Moderators, who have the approve posts permission, can restore soft deleted posts.</em>', 'cat' => 'post'),
-	'acl_f_ignoreflood' => array('lang' => 'Can ignore flood limit', 'cat' => 'post'),
-	'acl_f_postcount'	=> array('lang' => 'Increment post counter<br /><em>Please note that this setting only affects new posts.</em>', 'cat' => 'post'),
-	'acl_f_noapprove'	=> array('lang' => 'Can post without approval', 'cat' => 'post'),	
-
-	'acl_f_attach'		=> array('lang' => 'Can attach files', 'cat' => 'content'),	
-	'acl_f_icons'		=> array('lang' => 'Can use topic/post icons', 'cat' => 'content'),
-	'acl_f_bbcode'		=> array('lang' => 'Can use BBCode', 'cat' => 'content'),	
-	'acl_f_flash'		=> array('lang' => 'Can use [flash] BBCode tag', 'cat' => 'content'),
-	'acl_f_img'			=> array('lang' => 'Can use [img] BBCode tag', 'cat' => 'content'),
-	'acl_f_sigs'		=> array('lang' => 'Can use signatures', 'cat' => 'content'),
-	'acl_f_smilies'		=> array('lang' => 'Can use smilies', 'cat' => 'content'),
-
-	'acl_f_poll'		=> array('lang' => 'Can create polls', 'cat' => 'polls'),
-	'acl_f_vote'		=> array('lang' => 'Can vote in polls', 'cat' => 'polls'),
-	'acl_f_votechg'		=> array('lang' => 'Can change existing vote', 'cat' => 'polls'),
+	'ACL_F_LIST'		=> 'Can see forum',
+	'ACL_F_READ'		=> 'Can read forum',
+	'ACL_F_SEARCH'		=> 'Can search the forum',
+	'ACL_F_SUBSCRIBE'	=> 'Can subscribe forum',
+	'ACL_F_PRINT'		=> 'Can print topics',
+	'ACL_F_EMAIL'		=> 'Can email topics',
+	'ACL_F_BUMP'		=> 'Can bump topics',
+	'ACL_F_USER_LOCK'	=> 'Can lock own topics',
+	'ACL_F_DOWNLOAD'	=> 'Can download files',
+	'ACL_F_REPORT'		=> 'Can report posts',
+
+	'ACL_F_POST'		=> 'Can start new topics',
+	'ACL_F_STICKY'		=> 'Can post stickies',
+	'ACL_F_ANNOUNCE'	=> 'Can post announcements',
+	'ACL_F_REPLY'		=> 'Can reply to topics',
+	'ACL_F_EDIT'		=> 'Can edit own posts',
+	'ACL_F_DELETE'		=> 'Can permanently delete own posts',
+	'ACL_F_SOFTDELETE'	=> 'Can soft delete own posts<br /><em>Moderators, who have the approve posts permission, can restore soft deleted posts.</em>',
+	'ACL_F_IGNOREFLOOD' => 'Can ignore flood limit',
+	'ACL_F_POSTCOUNT'	=> 'Increment post counter<br /><em>Please note that this setting only affects new posts.</em>',
+	'ACL_F_NOAPPROVE'	=> 'Can post without approval',
+
+	'ACL_F_ATTACH'		=> 'Can attach files',
+	'ACL_F_ICONS'		=> 'Can use topic/post icons',
+	'ACL_F_BBCODE'		=> 'Can use BBCode',
+	'ACL_F_FLASH'		=> 'Can use [flash] BBCode tag',
+	'ACL_F_IMG'			=> 'Can use [img] BBCode tag',
+	'ACL_F_SIGS'		=> 'Can use signatures',
+	'ACL_F_SMILIES'		=> 'Can use smilies',
+
+	'ACL_F_POLL'		=> 'Can create polls',
+	'ACL_F_VOTE'		=> 'Can vote in polls',
+	'ACL_F_VOTECHG'		=> 'Can change existing vote',
 ));
 
 // Moderator Permissions
 $lang = array_merge($lang, array(
-	'acl_m_edit'		=> array('lang' => 'Can edit posts', 'cat' => 'post_actions'),
-	'acl_m_delete'		=> array('lang' => 'Can permanently delete posts', 'cat' => 'post_actions'),
-	'acl_m_softdelete'	=> array('lang' => 'Can soft delete posts<br /><em>Moderators, who have the approve posts permission, can restore soft deleted posts.</em>', 'cat' => 'post_actions'),
-	'acl_m_approve'		=> array('lang' => 'Can approve and restore posts', 'cat' => 'post_actions'),
-	'acl_m_report'		=> array('lang' => 'Can close and delete reports', 'cat' => 'post_actions'),
-	'acl_m_chgposter'	=> array('lang' => 'Can change post author', 'cat' => 'post_actions'),
-
-	'acl_m_move'	=> array('lang' => 'Can move topics', 'cat' => 'topic_actions'),
-	'acl_m_lock'	=> array('lang' => 'Can lock topics', 'cat' => 'topic_actions'),
-	'acl_m_split'	=> array('lang' => 'Can split topics', 'cat' => 'topic_actions'),
-	'acl_m_merge'	=> array('lang' => 'Can merge topics', 'cat' => 'topic_actions'),
-
-	'acl_m_info'	=> array('lang' => 'Can view post details', 'cat' => 'misc'),
-	'acl_m_warn'	=> array('lang' => 'Can issue warnings<br /><em>This setting is only assigned globally. It is not forum based.</em>', 'cat' => 'misc'), // This moderator setting is only global (and not local)
-	'acl_m_ban'		=> array('lang' => 'Can manage bans<br /><em>This setting is only assigned globally. It is not forum based.</em>', 'cat' => 'misc'), // This moderator setting is only global (and not local)
+	'ACL_M_EDIT'		=> 'Can edit posts',
+	'ACL_M_DELETE'		=> 'Can permanently delete posts',
+	'ACL_M_SOFTDELETE'	=> 'Can soft delete posts<br /><em>Moderators, who have the approve posts permission, can restore soft deleted posts.</em>',
+	'ACL_M_APPROVE'		=> 'Can approve posts',
+	'ACL_M_REPORT'		=> 'Can close and delete reports',
+	'ACL_M_CHGPOSTER'	=> 'Can change post author',
+
+	'ACL_M_MOVE'	=> 'Can move topics',
+	'ACL_M_LOCK'	=> 'Can lock topics',
+	'ACL_M_SPLIT'	=> 'Can split topics',
+	'ACL_M_MERGE'	=> 'Can merge topics',
+
+	'ACL_M_INFO'	=> 'Can view post details',
+	'ACL_M_WARN'	=> 'Can issue warnings<br /><em>This setting is only assigned globally. It is not forum based.</em>', // This moderator setting is only global (and not local)
+	'ACL_M_BAN'		=> 'Can manage bans<br /><em>This setting is only assigned globally. It is not forum based.</em>', // This moderator setting is only global (and not local)
 ));
 
 // Admin Permissions
 $lang = array_merge($lang, array(
-	'acl_a_board'		=> array('lang' => 'Can alter board settings/check for updates', 'cat' => 'settings'),
-	'acl_a_server'		=> array('lang' => 'Can alter server/communication settings', 'cat' => 'settings'),
-	'acl_a_jabber'		=> array('lang' => 'Can alter Jabber settings', 'cat' => 'settings'),
-	'acl_a_phpinfo'		=> array('lang' => 'Can view php settings', 'cat' => 'settings'),
-
-	'acl_a_forum'		=> array('lang' => 'Can manage forums', 'cat' => 'forums'),
-	'acl_a_forumadd'	=> array('lang' => 'Can add new forums', 'cat' => 'forums'),
-	'acl_a_forumdel'	=> array('lang' => 'Can delete forums', 'cat' => 'forums'),
-	'acl_a_prune'		=> array('lang' => 'Can prune forums', 'cat' => 'forums'),
-
-	'acl_a_icons'		=> array('lang' => 'Can alter topic/post icons and smilies', 'cat' => 'posting'),
-	'acl_a_words'		=> array('lang' => 'Can alter word censors', 'cat' => 'posting'),
-	'acl_a_bbcode'		=> array('lang' => 'Can define BBCode tags', 'cat' => 'posting'),
-	'acl_a_attach'		=> array('lang' => 'Can alter attachment related settings', 'cat' => 'posting'),
-
-	'acl_a_user'		=> array('lang' => 'Can manage users<br /><em>This also includes seeing the users browser agent within the viewonline list.</em>', 'cat' => 'user_group'),
-	'acl_a_userdel'		=> array('lang' => 'Can delete/prune users', 'cat' => 'user_group'),
-	'acl_a_group'		=> array('lang' => 'Can manage groups', 'cat' => 'user_group'),
-	'acl_a_groupadd'	=> array('lang' => 'Can add new groups', 'cat' => 'user_group'),
-	'acl_a_groupdel'	=> array('lang' => 'Can delete groups', 'cat' => 'user_group'),
-	'acl_a_ranks'		=> array('lang' => 'Can manage ranks', 'cat' => 'user_group'),
-	'acl_a_profile'		=> array('lang' => 'Can manage custom profile fields', 'cat' => 'user_group'),
-	'acl_a_names'		=> array('lang' => 'Can manage disallowed names', 'cat' => 'user_group'),
-	'acl_a_ban'			=> array('lang' => 'Can manage bans', 'cat' => 'user_group'),
-
-	'acl_a_viewauth'	=> array('lang' => 'Can view permission masks', 'cat' => 'permissions'),
-	'acl_a_authgroups'	=> array('lang' => 'Can alter permissions for individual groups', 'cat' => 'permissions'),
-	'acl_a_authusers'	=> array('lang' => 'Can alter permissions for individual users', 'cat' => 'permissions'),
-	'acl_a_fauth'		=> array('lang' => 'Can alter forum permission class', 'cat' => 'permissions'),
-	'acl_a_mauth'		=> array('lang' => 'Can alter moderator permission class', 'cat' => 'permissions'),
-	'acl_a_aauth'		=> array('lang' => 'Can alter admin permission class', 'cat' => 'permissions'),
-	'acl_a_uauth'		=> array('lang' => 'Can alter user permission class', 'cat' => 'permissions'),
-	'acl_a_roles'		=> array('lang' => 'Can manage roles', 'cat' => 'permissions'),
-	'acl_a_switchperm'	=> array('lang' => 'Can use others permissions', 'cat' => 'permissions'),
-
-	'acl_a_styles'		=> array('lang' => 'Can manage styles', 'cat' => 'misc'),
-	'acl_a_extensions'	=> array('lang' => 'Can manage extensions', 'cat' => 'misc'),
-	'acl_a_viewlogs'	=> array('lang' => 'Can view logs', 'cat' => 'misc'),
-	'acl_a_clearlogs'	=> array('lang' => 'Can clear logs', 'cat' => 'misc'),
-	'acl_a_modules'		=> array('lang' => 'Can manage modules', 'cat' => 'misc'),
-	'acl_a_language'	=> array('lang' => 'Can manage language packs', 'cat' => 'misc'),
-	'acl_a_email'		=> array('lang' => 'Can send mass email', 'cat' => 'misc'),
-	'acl_a_bots'		=> array('lang' => 'Can manage bots', 'cat' => 'misc'),
-	'acl_a_reasons'		=> array('lang' => 'Can manage report/denial reasons', 'cat' => 'misc'),
-	'acl_a_backup'		=> array('lang' => 'Can backup/restore database', 'cat' => 'misc'),
-	'acl_a_search'		=> array('lang' => 'Can manage search backends and settings', 'cat' => 'misc'),
+	'ACL_A_BOARD'		=> 'Can alter board settings/check for updates',
+	'ACL_A_SERVER'		=> 'Can alter server/communication settings',
+	'ACL_A_JABBER'		=> 'Can alter Jabber settings',
+	'ACL_A_PHPINFO'		=> 'Can view php settings',
+
+	'ACL_A_FORUM'		=> 'Can manage forums',
+	'ACL_A_FORUMADD'	=> 'Can add new forums',
+	'ACL_A_FORUMDEL'	=> 'Can delete forums',
+	'ACL_A_PRUNE'		=> 'Can prune forums',
+
+	'ACL_A_ICONS'		=> 'Can alter topic/post icons and smilies',
+	'ACL_A_WORDS'		=> 'Can alter word censors',
+	'ACL_A_BBCODE'		=> 'Can define BBCode tags',
+	'ACL_A_ATTACH'		=> 'Can alter attachment related settings',
+
+	'ACL_A_USER'		=> 'Can manage users<br /><em>This also includes seeing the users browser agent within the viewonline list.</em>',
+	'ACL_A_USERDEL'		=> 'Can delete/prune users',
+	'ACL_A_GROUP'		=> 'Can manage groups',
+	'ACL_A_GROUPADD'	=> 'Can add new groups',
+	'ACL_A_GROUPDEL'	=> 'Can delete groups',
+	'ACL_A_RANKS'		=> 'Can manage ranks',
+	'ACL_A_PROFILE'		=> 'Can manage custom profile fields',
+	'ACL_A_NAMES'		=> 'Can manage disallowed names',
+	'ACL_A_BAN'			=> 'Can manage bans',
+
+	'ACL_A_VIEWAUTH'	=> 'Can view permission masks',
+	'ACL_A_AUTHGROUPS'	=> 'Can alter permissions for individual groups',
+	'ACL_A_AUTHUSERS'	=> 'Can alter permissions for individual users',
+	'ACL_A_FAUTH'		=> 'Can alter forum permission class',
+	'ACL_A_MAUTH'		=> 'Can alter moderator permission class',
+	'ACL_A_AAUTH'		=> 'Can alter admin permission class',
+	'ACL_A_UAUTH'		=> 'Can alter user permission class',
+	'ACL_A_ROLES'		=> 'Can manage roles',
+	'ACL_A_SWITCHPERM'	=> 'Can use others permissions',
+
+	'ACL_A_STYLES'		=> 'Can manage styles',
+	'ACL_A_EXTENSIONS'	=> 'Can manage extensions',
+	'ACL_A_VIEWLOGS'	=> 'Can view logs',
+	'ACL_A_CLEARLOGS'	=> 'Can clear logs',
+	'ACL_A_MODULES'		=> 'Can manage modules',
+	'ACL_A_LANGUAGE'	=> 'Can manage language packs',
+	'ACL_A_EMAIL'		=> 'Can send mass email',
+	'ACL_A_BOTS'		=> 'Can manage bots',
+	'ACL_A_REASONS'		=> 'Can manage report/denial reasons',
+	'ACL_A_BACKUP'		=> 'Can backup/restore database',
+	'ACL_A_SEARCH'		=> 'Can manage search backends and settings',
 ));
diff --git a/phpBB/language/en/common.php b/phpBB/language/en/common.php
index b188d90f3a..e5c0478d98 100644
--- a/phpBB/language/en/common.php
+++ b/phpBB/language/en/common.php
@@ -88,6 +88,14 @@ $lang = array_merge($lang, array(
 	'ATTACHED_IMAGE_NOT_IMAGE'		=> 'The image file you tried to attach is invalid.',
 	'AUTHOR'						=> 'Author',
 	'AUTH_NO_PROFILE_CREATED'		=> 'The creation of a user profile was unsuccessful.',
+	'AUTH_PROVIDER_OAUTH_ERROR_INVALID_ENTRY'				=> 'Invalid database entry.',
+	'AUTH_PROVIDER_OAUTH_ERROR_INVALID_SERVICE_TYPE'		=> 'Invalid service type provided to OAuth service handler.',
+	'AUTH_PROVIDER_OAUTH_ERROR_SERVICE_NOT_CREATED'			=> 'OAuth service not created',
+	'AUTH_PROVIDER_OAUTH_SERVICE_BITLY'						=> 'Bitly',
+	'AUTH_PROVIDER_OAUTH_SERVICE_FACEBOOK'					=> 'Facebook',
+	'AUTH_PROVIDER_OAUTH_SERVICE_GOOGLE'					=> 'Google',
+	'AUTH_PROVIDER_OAUTH_TOKEN_ERROR_NOT_STORED'			=> 'OAuth token not stored.',
+	'AUTH_PROVIDER_OAUTH_TOKEN_ERROR_INCORRECTLY_STORED'	=> 'OAuth token incorrectly stored.',
 	'AVATAR_DISALLOWED_CONTENT'		=> 'The upload was rejected because the uploaded file was identified as a possible attack vector.',
 	'AVATAR_DISALLOWED_EXTENSION'	=> 'This file cannot be displayed because the extension <strong>%s</strong> is not allowed.',
 	'AVATAR_EMPTY_REMOTE_DATA'		=> 'The specified avatar could not be uploaded because the remote data appears to be invalid or corrupted.',
@@ -351,6 +359,7 @@ $lang = array_merge($lang, array(
 	'LOGIN_CONFIRM_EXPLAIN'				=> 'To prevent brute forcing accounts the board requires you to enter a confirmation code after a maximum amount of failed logins. The code is displayed in the image you should see below. If you are visually impaired or cannot otherwise read this code please contact the %sBoard Administrator%s.', // unused
 	'LOGIN_ERROR_ATTEMPTS'				=> 'You exceeded the maximum allowed number of login attempts. In addition to your username and password you now also have to solve the CAPTCHA below.',
 	'LOGIN_ERROR_EXTERNAL_AUTH_APACHE'	=> 'You have not been authenticated by Apache.',
+	'LOGIN_ERROR_OAUTH_SERVICE_DOES_NOT_EXIST'	=> 'A non-existant OAuth service has been requested.',
 	'LOGIN_ERROR_PASSWORD'				=> 'You have specified an incorrect password. Please check your password and try again. If you continue to have problems please contact the %sBoard Administrator%s.',
 	'LOGIN_ERROR_PASSWORD_CONVERT'		=> 'It was not possible to convert your password when updating this bulletin board’s software. Please %srequest a new password%s. If you continue to have problems please contact the %sBoard Administrator%s.',
 	'LOGIN_ERROR_USERNAME'				=> 'You have specified an incorrect username. Please check your username and try again. If you continue to have problems please contact the %sBoard Administrator%s.',
@@ -414,6 +423,8 @@ $lang = array_merge($lang, array(
 		2	=> '<strong>%d</strong> Notifications',
 	),
 	'NOTIFICATION_BOOKMARK'				=> '%1$s replied to the topic "%2$s" you have bookmarked.',
+	'NOTIFICATION_GROUP_REQUEST'		=> '%1$s is requesting to join the group %2$s.',
+	'NOTIFICATION_GROUP_REQUEST_APPROVED'	=> 'Your request to join the group %1$s has been approved.',
 	'NOTIFICATION_PM'					=> '%1$s sent you a Private Message "%2$s".',
 	'NOTIFICATION_POST'					=> '%1$s replied to the topic "%2$s".',
 	'NOTIFICATION_POST_APPROVED'		=> 'Your post was approved "%2$s".',
diff --git a/phpBB/language/en/email/forum_notify.txt b/phpBB/language/en/email/forum_notify.txt
index 66f3a68689..a05be5fd96 100644
--- a/phpBB/language/en/email/forum_notify.txt
+++ b/phpBB/language/en/email/forum_notify.txt
@@ -2,7 +2,7 @@ Subject: Forum post notification - "{FORUM_NAME}"
 
 Hello {USERNAME},
 
-You are receiving this notification because you are watching the forum "{FORUM_NAME}" at "{SITENAME}". This forum has received a new reply to the topic "{TOPIC_TITLE}"<!-- IF AUTHOR_NAME --> by {AUTHOR_NAME}<!-- ENDIF --> since your last visit. You can use the following link to view the last unread reply, no more notifications will be sent until you visit the topic.
+You are receiving this notification because you are watching the forum "{FORUM_NAME}" at "{SITENAME}". This forum has received a new reply to the topic "{TOPIC_TITLE}"<!-- IF AUTHOR_NAME !== '' --> by {AUTHOR_NAME}<!-- ENDIF --> since your last visit. You can use the following link to view the last unread reply, no more notifications will be sent until you visit the topic.
 
 {U_NEWEST_POST}
 
diff --git a/phpBB/language/en/email/group_approved.txt b/phpBB/language/en/email/group_approved.txt
deleted file mode 100644
index 24afefcd07..0000000000
--- a/phpBB/language/en/email/group_approved.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-Subject: Your request has been approved
-
-Congratulations,
-
-Your request to join the "{GROUP_NAME}" group on "{SITENAME}" has been approved.
-Click on the following link to see your group membership.
-
-{U_GROUP}
-
-{EMAIL_SIG}
diff --git a/phpBB/language/en/email/installed.txt b/phpBB/language/en/email/installed.txt
index 9ec93484e1..8f63d07635 100644
--- a/phpBB/language/en/email/installed.txt
+++ b/phpBB/language/en/email/installed.txt
@@ -12,7 +12,7 @@ Username: {USERNAME}
 Board URL: {U_BOARD}
 ----------------------------
 
-Useful information regarding the phpBB software can be found in the docs folder of your installation and on phpBB.com's support page - http://www.phpbb.com/support/
+Useful information regarding the phpBB software can be found in the docs folder of your installation and on phpBB.com's support page - https://www.phpbb.com/support/
 
 In order to keep your board safe and secure, we highly recommended keeping current with software releases. For your convenience, a mailing list is available at the page referenced above.
 
diff --git a/phpBB/language/en/email/newtopic_notify.txt b/phpBB/language/en/email/newtopic_notify.txt
index bf6799e5be..5089e7dcb8 100644
--- a/phpBB/language/en/email/newtopic_notify.txt
+++ b/phpBB/language/en/email/newtopic_notify.txt
@@ -2,7 +2,7 @@ Subject: New topic notification - "{FORUM_NAME}"
 
 Hello {USERNAME},
 
-You are receiving this notification because you are watching the forum "{FORUM_NAME}" at "{SITENAME}". This forum has received a new topic<!-- IF AUTHOR_NAME --> by {AUTHOR_NAME}<!-- ENDIF --> since your last visit, "{TOPIC_TITLE}". You can use the following link to view the forum, no more notifications will be sent until you visit the forum.
+You are receiving this notification because you are watching the forum "{FORUM_NAME}" at "{SITENAME}". This forum has received a new topic<!-- IF AUTHOR_NAME !== '' --> by {AUTHOR_NAME}<!-- ENDIF --> since your last visit, "{TOPIC_TITLE}". You can use the following link to view the forum, no more notifications will be sent until you visit the forum.
 
 {U_FORUM}
 
diff --git a/phpBB/language/en/email/topic_notify.txt b/phpBB/language/en/email/topic_notify.txt
index 472375fb22..529478eae2 100644
--- a/phpBB/language/en/email/topic_notify.txt
+++ b/phpBB/language/en/email/topic_notify.txt
@@ -2,7 +2,7 @@ Subject: Topic reply notification - "{TOPIC_TITLE}"
 
 Hello {USERNAME},
 
-You are receiving this notification because you are watching the topic "{TOPIC_TITLE}" at "{SITENAME}". This topic has received a reply<!-- IF AUTHOR_NAME --> by {AUTHOR_NAME}<!-- ENDIF --> since your last visit. You can use the following link to view the replies made, no more notifications will be sent until you visit the topic.
+You are receiving this notification because you are watching the topic "{TOPIC_TITLE}" at "{SITENAME}". This topic has received a reply<!-- IF AUTHOR_NAME !== '' --> by {AUTHOR_NAME}<!-- ENDIF --> since your last visit. You can use the following link to view the replies made, no more notifications will be sent until you visit the topic.
 
 If you want to view the newest post made since your last visit, click the following link:
 {U_NEWEST_POST}
diff --git a/phpBB/language/en/help_faq.php b/phpBB/language/en/help_faq.php
index 68dc05f992..94e6622685 100644
--- a/phpBB/language/en/help_faq.php
+++ b/phpBB/language/en/help_faq.php
@@ -332,7 +332,7 @@ $help = array(
 	),
 	array(
 		0 => 'Why isn’t X feature available?',
-		1 => 'This software was written by and licensed through phpBB Group. If you believe a feature needs to be added, or you want to report a bug, please visit the phpBB <a href="http://area51.phpbb.com/">Area51</a> website, where you will find resources to do so.'
+		1 => 'This software was written by and licensed through phpBB Group. If you believe a feature needs to be added please visit the <a href="https://www.phpbb.com/ideas/">phpBB Ideas Centre</a>, where you can upvote existing ideas or suggest new features.'
 	),
 	array(
 		0 => 'Who do I contact about abusive and/or legal matters related to this board?',
diff --git a/phpBB/language/en/install.php b/phpBB/language/en/install.php
index be45047861..03c9562983 100644
--- a/phpBB/language/en/install.php
+++ b/phpBB/language/en/install.php
@@ -374,7 +374,7 @@ $lang = array_merge($lang, array(
 
 // Updater
 $lang = array_merge($lang, array(
-	'ALL_FILES_UP_TO_DATE'		=> 'All files are up to date with the latest phpBB version. You should now <a href="%1$s">login to your board</a> and check if everything is working fine. Do not forget to delete, rename or move your install directory! Please send us updated information about your server and board configurations from the <a href="%2$s">Send statistics</a> module in your ACP.',
+	'ALL_FILES_UP_TO_DATE'		=> 'All files are up to date with the latest phpBB version.',
 	'ARCHIVE_FILE'				=> 'Source file within archive',
 
 	'BACK'				=> 'Back',
@@ -398,7 +398,7 @@ $lang = array_merge($lang, array(
 
 	'DATABASE_TYPE'						=> 'Database type',
 	'DATABASE_UPDATE_COMPLETE'			=> 'Database updater has completed!',
-	'DATABASE_UPDATE_CONTINUE'			=> 'Continue database update.',
+	'DATABASE_UPDATE_CONTINUE'			=> 'Continue database update',
 	'DATABASE_UPDATE_INFO_OLD'			=> 'The database update file within the install directory is outdated. Please make sure you uploaded the correct version of the file.',
 	'DATABASE_UPDATE_NOT_COMPLETED'		=> 'The database update has not yet completed.',
 	'DELETE_USER_REMOVE'				=> 'Delete user and remove posts',
@@ -419,8 +419,9 @@ $lang = array_merge($lang, array(
 	'DOWNLOAD_UPDATE_METHOD'			=> 'Download modified files archive',
 	'DOWNLOAD_UPDATE_METHOD_EXPLAIN'	=> 'Once downloaded you should unpack the archive. You will find the modified files you need to upload to your phpBB root directory within it. Please upload the files to their respective locations then. After you have uploaded all files, please check the files again with the other button below.',
 
-	'ERROR'			=> 'Error',
 	'EDIT_USERNAME'	=> 'Edit username',
+	'ERROR'			=> 'Error',
+	'EVERYTHING_UP_TO_DATE'		=> 'Everything is up to date with the latest phpBB version. You should now <a href="%1$s">login to your board</a> and check if everything is working fine. Do not forget to delete, rename or move your install directory! Please send us updated information about your server and board configurations from the <a href="%2$s">Send statistics</a> module in your ACP.',
 
 	'FILE_ALREADY_UP_TO_DATE'		=> 'File is already up to date.',
 	'FILE_DIFF_NOT_ALLOWED'			=> 'File not allowed to be diffed.',
@@ -570,6 +571,7 @@ $lang = array_merge($lang, array(
 	'UPLOAD_METHOD'					=> 'Upload method',
 
 	'UPDATE_DB_SUCCESS'				=> 'Database update was successful.',
+	'UPDATE_FILE_SUCCESS'			=> 'File update was successful.',
 	'USER_ACTIVE'					=> 'Active user',
 	'USER_INACTIVE'					=> 'Inactive user',
 
diff --git a/phpBB/language/en/ucp.php b/phpBB/language/en/ucp.php
index 51823ddb12..e2d5dc5ad1 100644
--- a/phpBB/language/en/ucp.php
+++ b/phpBB/language/en/ucp.php
@@ -270,6 +270,10 @@ $lang = array_merge($lang, array(
 	'LINK_REMOTE_SIZE'			=> 'Avatar dimensions',
 	'LINK_REMOTE_SIZE_EXPLAIN'	=> 'Specify the width and height of the avatar, leave blank to attempt automatic verification.',
 	'LOGIN_EXPLAIN_UCP'			=> 'Please login in order to access the User Control Panel.',
+	'LOGIN_LINK'					=> 'Link or register your account on an external service with your board account',
+	'LOGIN_LINK_EXPLAIN'			=> 'You have attempted to login with an external service that is not yet connected to an account on this board. You must now either link this account to an existing account or create a new account.',
+	'LOGIN_LINK_MISSING_DATA'		=> 'Data that is necessary to link your account with an external service is not available. Please restart the login process.',
+	'LOGIN_LINK_NO_DATA_PROVIDED'	=> 'No data has been provided to this page to link an external account to a forum account. Please contact the board administrator if you continue to experience problems.',
 	'LOGIN_KEY'					=> 'Login Key',
 	'LOGIN_TIME'				=> 'Login Time',
 	'LOGIN_REDIRECT'			=> 'You have been successfully logged in.',
@@ -313,6 +317,7 @@ $lang = array_merge($lang, array(
 	'NOTIFICATION_METHOD_JABBER'						=> 'Jabber',
 	'NOTIFICATION_TYPE'									=> 'Notification type',
 	'NOTIFICATION_TYPE_BOOKMARK'						=> 'Someone replies to a topic you have bookmarked',
+	'NOTIFICATION_TYPE_GROUP_REQUEST'					=> 'Someone requests to join a group you lead',
 	'NOTIFICATION_TYPE_IN_MODERATION_QUEUE'				=> 'A post or topic needs approval',
 	'NOTIFICATION_TYPE_MODERATION_QUEUE'   				=> 'Your topics/posts are approved or disapproved by a moderator',
 	'NOTIFICATION_TYPE_PM'								=> 'Someone sends you a private message',
@@ -475,11 +480,20 @@ $lang = array_merge($lang, array(
 	'UCP_ADMIN_ACTIVATE'		=> 'Please note that you will need to enter a valid email address before your account is activated. The administrator will review your account and if approved you will receive an email at the address you specified.',
 	'UCP_AIM'					=> 'AOL Instant Messenger',
 	'UCP_ATTACHMENTS'			=> 'Attachments',
+	'UCP_AUTH_LINK'				=> 'External accounts',
+	'UCP_AUTH_LINK_ASK'			=> 'You currently have no account associated with this external service. Click the button below to link your board account to an account with this external service.',
+	'UCP_AUTH_LINK_ID'			=> 'Unique identifier',
+	'UCP_AUTH_LINK_LINK'		=> 'Link',
+	'UCP_AUTH_LINK_MANAGE'		=> 'Manage external account associations',
+	'UCP_AUTH_LINK_NOT_SUPPORTED'	=> 'Linking board accounts to external services is not supported by this board’s current authentication method.',
+	'UCP_AUTH_LINK_TITLE'		=> 'Manage your external account associations',
+	'UCP_AUTH_LINK_UNLINK'		=> 'Unlink',
 	'UCP_COPPA_BEFORE'			=> 'Before %s',
 	'UCP_COPPA_ON_AFTER'		=> 'On or after %s',
 	'UCP_EMAIL_ACTIVATE'		=> 'Please note that you will need to enter a valid email address before your account is activated. You will receive an email at the address you provide that contains an account activation link.',
 	'UCP_ICQ'					=> 'ICQ number',
 	'UCP_JABBER'				=> 'Jabber address',
+	'UCP_LOGIN_LINK'			=> 'Set up an external account association',
 
 	'UCP_MAIN'					=> 'Overview',
 	'UCP_MAIN_ATTACHMENTS'		=> 'Manage attachments',