* upstream/develop: (255 commits)
[ticket/10935] Limit number of PM rules per user to 5000
[ticket/10801] Fixed quickmod tools.
[ticket/9551] uncomment line and change length to 255
[ticket/10925] Clarify installation requirements for SQLite
[ticket/10938] Serve subforum listing on forumlist from template loop
[ticket/10640] Change subject length in mcp in subsilver
[ticket/10640] Change subject length in MCP
[ticket/10640] Do not change default value of truncate_string()
[ticket/10640] Change maximum subject length
[ticket/10936] remove PCRE and mbstring support check
[ticket/10936] fix language key
[ticket/10829] Delete T_STYLESHEET_NAME - no longer used.
[ticket/10829] $style_name -> $style_path in style class.
[ticket/10743] Renaming user->theme
[ticket/10743] Changing obtain_cfg_items
[ticket/10882] Fix test name - oops.
[ticket/10931] Apply strtolower() correctly, i.e. not on false.
[ticket/10931] Also test get_bytes() and get_string() with false.
[ticket/10931] Make to_numeric function globally available.
[ticket/10932] Use included composer.phar in build process
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Conflicts:
phpBB/includes/mcp/mcp_warn.php
phpBB/install/database_update.php
phpBB/styles/prosilver/template/ucp_avatar_options.html
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