15 files changed, 148 insertions, 27 deletions
diff --git a/phpBB/adm/style/acp_board.html b/phpBB/adm/style/acp_board.html
index 64592a5de2..04dee98276 100644
--- a/phpBB/adm/style/acp_board.html
+++ b/phpBB/adm/style/acp_board.html
@@ -18,10 +18,11 @@
 <!-- BEGIN options -->
 	<!-- IF options.S_LEGEND -->
 		<!-- IF not options.S_FIRST_ROW -->
-			</fieldset>
-		<!-- ENDIF -->
+		</fieldset>
+
 		<fieldset>
-			<legend>{options.LEGEND}</legend>
+		<!-- ENDIF -->
+		<legend>{options.LEGEND}</legend>
 	<!-- ELSE -->
 
 		<dl>
diff --git a/phpBB/adm/style/installer_form.html b/phpBB/adm/style/installer_form.html
index cc5b041fa1..a38f33c7c2 100644
--- a/phpBB/adm/style/installer_form.html
+++ b/phpBB/adm/style/installer_form.html
@@ -49,7 +49,7 @@
 <fieldset class="submit-buttons">
 	<legend>{L_SUBMIT}</legend>
 	<!-- BEGIN submit_buttons -->
-	<input class="button1" type="submit" name="{submit_buttons.KEY}" value="{submit_buttons.TITLE}" />
+	<input class="button1<!-- IF submit_buttons.DISABLED --> disabled<!-- ENDIF -->" type="submit" name="{submit_buttons.KEY}" value="{submit_buttons.TITLE}"<!-- IF submit_buttons.DISABLED --> disabled="disabled"<!-- ENDIF --> />
 	<!-- END submit_buttons -->
 </fieldset>
 <!-- ENDIF -->
diff --git a/phpBB/composer.json b/phpBB/composer.json
index 1b8de72710..5bc8f5dc0d 100644
--- a/phpBB/composer.json
+++ b/phpBB/composer.json
@@ -33,7 +33,7 @@
 		"marc1706/fast-image-size": "^1.1",
 		"paragonie/random_compat": "^1.4",
 		"patchwork/utf8": "^1.1",
-		"s9e/text-formatter": "~0.10.0",
+		"s9e/text-formatter": "~0.11.0",
 		"symfony/config": "^2.8",
 		"symfony/console": "^2.8",
 		"symfony/debug": "^2.8",
diff --git a/phpBB/composer.lock b/phpBB/composer.lock
index d460c6db58..9345d07dbf 100644
--- a/phpBB/composer.lock
+++ b/phpBB/composer.lock
@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "3b947e5d38012be6ef86609c709c7b4b",
-    "content-hash": "447fa8ed870502dc3089b0a0ffa08ef0",
+    "hash": "7c30306b2abcb79a206bf6497ef45a02",
+    "content-hash": "d559dd0af2317fb0fc15720a18834e33",
     "packages": [
         {
             "name": "bantu/ini-get-wrapper",
@@ -660,16 +660,16 @@
         },
         {
             "name": "s9e/text-formatter",
-            "version": "0.10.1",
+            "version": "0.11.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/s9e/TextFormatter.git",
-                "reference": "9380fd3d3e3289d7e966bab7769ca2aae5d23f67"
+                "reference": "664b3eaf52baaae4d93548f5e20246fa5942b2b9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/s9e/TextFormatter/zipball/9380fd3d3e3289d7e966bab7769ca2aae5d23f67",
-                "reference": "9380fd3d3e3289d7e966bab7769ca2aae5d23f67",
+                "url": "https://api.github.com/repos/s9e/TextFormatter/zipball/664b3eaf52baaae4d93548f5e20246fa5942b2b9",
+                "reference": "664b3eaf52baaae4d93548f5e20246fa5942b2b9",
                 "shasum": ""
             },
             "require": {
@@ -721,7 +721,7 @@
                 "parser",
                 "shortcodes"
             ],
-            "time": "2017-07-03 13:55:54"
+            "time": "2017-08-04 23:06:38"
         },
         {
             "name": "symfony/config",
diff --git a/phpBB/install/convert/convert.php b/phpBB/install/convert/convert.php
index 03913d6ae6..3e9e562f2e 100644
--- a/phpBB/install/convert/convert.php
+++ b/phpBB/install/convert/convert.php
@@ -53,7 +53,7 @@ class convert
 
 	var $p_master;
 
-	function convert($p_master)
+	function __construct($p_master)
 	{
 		$this->p_master = $p_master;
 	}
diff --git a/phpBB/phpbb/cache/driver/apcu.php b/phpBB/phpbb/cache/driver/apcu.php
new file mode 100644
index 0000000000..40192e4026
--- /dev/null
+++ b/phpBB/phpbb/cache/driver/apcu.php
@@ -0,0 +1,70 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb\cache\driver;
+
+/**
+* ACM for APCU
+*/
+class apcu extends \phpbb\cache\driver\memory
+{
+	var $extension = 'apcu';
+
+	/**
+	* {@inheritDoc}
+	*/
+	function purge()
+	{
+		apcu_clear_cache();
+
+		parent::purge();
+	}
+
+	/**
+	* Fetch an item from the cache
+	*
+	* @access protected
+	* @param string $var Cache key
+	* @return mixed Cached data
+	*/
+	function _read($var)
+	{
+		return apcu_fetch($this->key_prefix . $var);
+	}
+
+	/**
+	* Store data in the cache
+	*
+	* @access protected
+	* @param string $var Cache key
+	* @param mixed $data Data to store
+	* @param int $ttl Time-to-live of cached data
+	* @return bool True if the operation succeeded
+	*/
+	function _write($var, $data, $ttl = 2592000)
+	{
+		return apcu_store($this->key_prefix . $var, $data, $ttl);
+	}
+
+	/**
+	* Remove an item from the cache
+	*
+	* @access protected
+	* @param string $var Cache key
+	* @return bool True if the operation succeeded
+	*/
+	function _delete($var)
+	{
+		return apcu_delete($this->key_prefix . $var);
+	}
+}
diff --git a/phpBB/phpbb/cache/driver/memcached.php b/phpBB/phpbb/cache/driver/memcached.php
index a7da22d7e8..808e15afe8 100644
--- a/phpBB/phpbb/cache/driver/memcached.php
+++ b/phpBB/phpbb/cache/driver/memcached.php
@@ -68,7 +68,7 @@ class memcached extends \phpbb\cache\driver\memory
 		foreach (explode(',', PHPBB_ACM_MEMCACHE) as $u)
 		{
 			preg_match('#(.*)/(\d+)#', $u, $parts);
-			$this->memcache->addServer(trim($parts[1]), (int) trim($parts[2]));
+			$this->memcached->addServer(trim($parts[1]), (int) trim($parts[2]));
 		}
 	}
 
diff --git a/phpBB/phpbb/db/extractor/postgres_extractor.php b/phpBB/phpbb/db/extractor/postgres_extractor.php
index a98e39621c..0219d2ac8d 100644
--- a/phpBB/phpbb/db/extractor/postgres_extractor.php
+++ b/phpBB/phpbb/db/extractor/postgres_extractor.php
@@ -85,7 +85,7 @@ class postgres_extractor extends base_extractor
 		// We don't even care about storing the results. We already know the answer if we get rows back.
 		if ($this->db->sql_fetchrow($result))
 		{
-			$sql_data .= "DROP SEQUENCE {$table_name}_seq;\n";
+			$sql_data .= "DROP SEQUENCE IF EXISTS {$table_name}_seq;\n";
 			$sql_data .= "CREATE SEQUENCE {$table_name}_seq;\n";
 		}
 		$this->db->sql_freeresult($result);
diff --git a/phpBB/phpbb/db/tools/postgres.php b/phpBB/phpbb/db/tools/postgres.php
index e2a4e668a6..077d6e06f9 100644
--- a/phpBB/phpbb/db/tools/postgres.php
+++ b/phpBB/phpbb/db/tools/postgres.php
@@ -448,7 +448,7 @@ class postgres extends tools
 		// We don't even care about storing the results. We already know the answer if we get rows back.
 		if ($this->db->sql_fetchrow($result))
 		{
-			$statements[] =  "DROP SEQUENCE {$table_name}_seq;\n";
+			$statements[] =  "DROP SEQUENCE IF EXISTS {$table_name}_seq;\n";
 		}
 		$this->db->sql_freeresult($result);
 
diff --git a/phpBB/phpbb/install/helper/iohandler/ajax_iohandler.php b/phpBB/phpbb/install/helper/iohandler/ajax_iohandler.php
index a40d457466..bce0149890 100644
--- a/phpBB/phpbb/install/helper/iohandler/ajax_iohandler.php
+++ b/phpBB/phpbb/install/helper/iohandler/ajax_iohandler.php
@@ -186,6 +186,7 @@ class ajax_iohandler extends iohandler_base
 			$tpl_ary['TITLE'] = $this->language->lang($input_options['label']);
 			$tpl_ary['KEY'] = $input_name;
 			$tpl_ary['S_EXPLAIN'] = false;
+			$tpl_ary['DISABLED'] = isset($input_options['disabled']) ? $input_options['disabled'] : false;
 
 			if (isset($input_options['default']))
 			{
@@ -219,6 +220,11 @@ class ajax_iohandler extends iohandler_base
 
 		$this->template->assign_var('S_NOT_ONLY_BUTTON_FORM', $not_button_form);
 
+		if (!$not_button_form)
+		{
+			$this->template->destroy_block_vars('options');
+		}
+
 		$this->template->set_filenames(array(
 			'form_install' => 'installer_form.html',
 		));
diff --git a/phpBB/phpbb/install/module/update_filesystem/task/download_updated_files.php b/phpBB/phpbb/install/module/update_filesystem/task/download_updated_files.php
index f911b7ac62..21aa93b7ea 100644
--- a/phpBB/phpbb/install/module/update_filesystem/task/download_updated_files.php
+++ b/phpBB/phpbb/install/module/update_filesystem/task/download_updated_files.php
@@ -78,16 +78,23 @@ class download_updated_files extends task_base
 		}
 		else if ($this->iohandler->get_input('update_recheck_files_submit', false))
 		{
+			$this->installer_config->set('file_updater_elem_progress', '');
+			$this->installer_config->set('update_files', array());
 			throw new jump_to_restart_point_exception('check_update_files');
 		}
 		else
 		{
-			// Render download box
-			$this->iohandler->add_download_link(
-				'phpbb_installer_update_file_download',
-				'DOWNLOAD_UPDATE_METHOD',
-				'DOWNLOAD_UPDATE_METHOD_EXPLAIN'
-			);
+			$file_update_info = $this->installer_config->get('update_files', array());
+
+			if (count($file_update_info) > 0)
+			{
+				// Render download box
+				$this->iohandler->add_download_link(
+					'phpbb_installer_update_file_download',
+					'DOWNLOAD_UPDATE_METHOD',
+					'DOWNLOAD_UPDATE_METHOD_EXPLAIN'
+				);
+			}
 
 			// Add form to continue update
 			$this->iohandler->add_user_form_group('UPDATE_CONTINUE_UPDATE_PROCESS', array(
@@ -96,8 +103,9 @@ class download_updated_files extends task_base
 					'type'	=> 'submit',
 				),
 				'database_update_submit'	=> array(
-					'label'	=> 'UPDATE_CONTINUE_UPDATE_PROCESS',
-					'type'	=> 'submit',
+					'label'		=> 'UPDATE_CONTINUE_UPDATE_PROCESS',
+					'type'		=> 'submit',
+					'disabled'	=> count($file_update_info) > 0,
 				),
 			));
 
diff --git a/phpBB/phpbb/install/module/update_filesystem/task/file_check.php b/phpBB/phpbb/install/module/update_filesystem/task/file_check.php
index 47a71eb844..9daa8530c6 100644
--- a/phpBB/phpbb/install/module/update_filesystem/task/file_check.php
+++ b/phpBB/phpbb/install/module/update_filesystem/task/file_check.php
@@ -103,6 +103,29 @@ class file_check extends task_base
 			$file_update_info = array();
 			$file_update_info['update_without_diff'] = array_diff($update_info['binary'], $update_info['deleted']);
 
+			foreach ($file_update_info['update_without_diff'] as $key => $binary_file)
+			{
+				$new_file = $new_path . $binary_file;
+				$file = $this->phpbb_root_path . $binary_file;
+
+				if (!$this->filesystem->exists($file))
+				{
+					continue;
+				}
+
+				if (md5_file($file) === md5_file($new_file))
+				{
+					// File already up to date
+					unset($file_update_info['update_without_diff'][$key]);
+				}
+			}
+
+			// Remove update without diff info if empty
+			if (count($file_update_info['update_without_diff']) < 1)
+			{
+				unset($file_update_info['update_without_diff']);
+			}
+
 			// Filter out files that are already deleted
 			$file_update_info['delete'] = array_filter(
 				$update_info['deleted'],
@@ -111,6 +134,12 @@ class file_check extends task_base
 					return file_exists($root_path . $filename);
 				}
 			);
+
+			// Remove files to delete list if empty
+			if (count($file_update_info['delete']) < 1)
+			{
+				unset($file_update_info['delete']);
+			}
 		}
 
 		$progress_count = $this->installer_config->get('file_check_progress_count', 0);
diff --git a/phpBB/phpbb/install/module/update_filesystem/task/show_file_status.php b/phpBB/phpbb/install/module/update_filesystem/task/show_file_status.php
index cf1e4cf4ac..0e82f91553 100644
--- a/phpBB/phpbb/install/module/update_filesystem/task/show_file_status.php
+++ b/phpBB/phpbb/install/module/update_filesystem/task/show_file_status.php
@@ -129,9 +129,9 @@ class show_file_status extends task_base
 
 			// Add form to continue update
 			$this->iohandler->add_user_form_group('UPDATE_CONTINUE_FILE_UPDATE', array(
-				'submit_continue_file_update'	=> array(
-					'label'	=> 'UPDATE_CONTINUE_FILE_UPDATE',
-					'type'	=> 'submit',
+				'submit_continue_file_update' => array(
+					'label' => 'UPDATE_CONTINUE_FILE_UPDATE',
+					'type' => 'submit',
 				),
 			));
 
diff --git a/phpBB/styles/prosilver/theme/bidi.css b/phpBB/styles/prosilver/theme/bidi.css
index 70cfb83a78..923ff3e792 100644
--- a/phpBB/styles/prosilver/theme/bidi.css
+++ b/phpBB/styles/prosilver/theme/bidi.css
@@ -1073,4 +1073,10 @@ li.breadcrumbs span:first-child > a {
 	.captcha-panel dd.captcha {
 		margin-right: 0;
 	}
+	
+	.rtl p.responsive-center {
+		float: none;
+		text-align: center;
+		margin-bottom: 5px;
+	}
 }
diff --git a/phpBB/styles/prosilver/theme/content.css b/phpBB/styles/prosilver/theme/content.css
index 741056e4c4..c34e01d0ae 100644
--- a/phpBB/styles/prosilver/theme/content.css
+++ b/phpBB/styles/prosilver/theme/content.css
@@ -135,6 +135,7 @@ dl.row-item {
 	background-position: 10px 50%;		/* Position of folder icon */
 	background-repeat: no-repeat;
 	background-size: 32px;
+	image-rendering: -webkit-optimize-contrast;
 }
 
 dl.row-item dt {