[ticket/11716] Convert Soft Delete Mod to post/topic visibility

PHPBB3-11716
Merge pull request #1990 from nickvergessen/ticket/12154

[ticket/12154] Update schema files with lastest database schema
[ticket/11985] Don't try to install APC on PHP 5.5 or higher.

PHPBB3-11985
[ticket/11509] Perform commit message checking after PHPUnit (fixes path).

PHPBB3-11509
Merge pull request #1993 from bantu/ticket/11509-develop

[ticket/11509] Perform commit message checking after PHPUnit (fixes path...
[ticket/12156] Add missing passwords manager to oauth

PHPBB3-12156
Merge pull request #1991 from marc1706/ticket/12156

[ticket/12156] Add missing passwords manager to oauth
[ticket/11996] Remove note until we really do disable the board

PHPBB3-11996
Merge pull request #1942 from nickvergessen/ticket/11996

[ticket/11996] Add explanation how to correctly remove and update an extension
[ticket/11880] Break up schema changes in the migrator

PHPBB3-11880
[ticket/12159] Fix codesniffer complaints due to profilefields and passwords

The two PRs regarding profilefields and passwords manager that were recently
merged caused a few codesniffer complaints that are fixed by these changes.

PHPBB3-12159
Merge pull request #1997 from marc1706/ticket/12159

[ticket/12159] Fix codesniffer complaints due to profilefields and passwords

* marc1706/ticket/12159:
  [ticket/12159] Fix codesniffer complaints due to profilefields and passwords
[ticket/11509] Contrary to docs, COMMIT_RANGE is not available in PR mode.

PHPBB3-11509
[ticket/11509] Run commit message checker only in one environment.

PHPBB3-11509
[ticket/11985] Rename install -> setup. This is more generic and consistent.

PHPBB3-11985
[ticket/11985] Do not try to setup PHP extensions on HHVM.

PHPBB3-11985
[ticket/11716] Rename migration files and add note that it's converting a MOD

PHPBB3-11716
[ticket/12161] Do not use subdirectories in build/save directory.

This is pretty much pointless because a new build will wipe the save directory
and there are only a few files in there anyway.

PHPBB3-12161
[ticket/12141] PHP extension setup must happen before webserver + PHP-FPM.

PHPBB3-12141
[ticket/12141] Disable broken opcache extension on PHP 5.5.7.

PHPBB3-12141