* Fyorl/feature/attach-dl: (75 commits) [feature/attach-dl] Removed the use of some abbreviations [feature/attach-dl] Changed $files_added checks [feature/attach-dl] Renamed $post_id to $post_msg_id [feature/attach-dl] Fixed a comment [feature/attach-dl] Optimised an sql query [feature/attach-dl] Fixed the logic in an sql statement [feature/attch-dl] $forum_id cast to int [feature/attach-dl] Fixed $file_added to $files_added [feature/attach-dl] Moved definition of $archive_name [feature/attach-dl] Swapped the order of an if statement [feature/attach-dl] Cast variables to int [feature/attach-dl] Added $archive_path [feature/attach-dl] Used COMMA_SEPARATOR instead of actual comma [feature/attach-dl] Renamed $count to $files_added [feature/attach-dl] Removed sprintf() use [feature/attach-dl] Removed need for array_keys() [feature/attach-dl] Added multiple attachment downloads to PMs [feature/attach-dl] Removed reliance on current($row) [feature/attach-dl] Renamed to phpbb_download_handle_forum_auth [feature/attach-dl] Moved PM authentication handling into own function ...