[ticket/13133] Allow @vendor_name for includecss

PHPBB3-13133
[ticket/13133] Add unit tests

PHPBB3-13133
[ticket/11863] Grey out unavailable activation methods when emails disabled

Further fall back to USER_ACTIVATION_DISABLE when emails are disabled
but evaluate it at runtime.

PHPBB3-11863
[ticket/11863] Display warning to user because of activation method

PHPBB3-11863
[ticket/11863] Add functional test

PHPBB3-11863
[ticket/13100] Display only confirmation buttons when deleting shadow topic

PHPBB3-13100
[ticket/13100] Remove pointless variable

PHPBB3-13100
[ticket/13133] Rename $ok variable

PHPBB3-13133
[ticket/13220] Add template events to memberlist_search.html

PHPBB3-13220
[ticket/13309] Add event acp_email_options_after

PHPBB3-13309
[ticket/13290] Add EVENT index_body_forumlist_body_after

PHPBB3-13290
[ticket/13326] add viewtopic_url to event

https://tracker.phpbb.com/browse/PHPBB3-13326

PHPBB3-13326
[ticket/13328] add core.mcp_view_forum_modify_sql

https://tracker.phpbb.com/browse/PHPBB3-13328

PHPBB3-13328
[ticket/13328] fix CS

https://tracker.phpbb.com/browse/PHPBB3-13328

PHPBB3-13328
[ticket/13326] fix CS

https://tracker.phpbb.com/browse/PHPBB3-13326

PHPBB3-13326
[ticket/13332] Pass user row to passwords manager check method

PHPBB3-13332
[ticket/13332] Remove useless $result assignment

PHPBB3-13332
[ticket/13332] Fix auth provider tests

PHPBB3-13332
[ticket/13280] Revert "Merge pull request #3107 from marc1706/ticket/13280"

This reverts commit a1b58d05d158ff7afd789c1b27821e17198f8d58, reversing
changes made to 0e772afb9db640e54e84cfccaddcf74f3edbb3fb.

PHPBB3-13280
[ticket/13280] Make the tests failing

PHPBB3-13280