[ticket/12213] Add MCP events for custom quick moderation options

Addition to PR #2045 - rename the flag variable to more sensible one.

PHPBB3-12213
[ticket/12216] Undefined index: lang_options when creating date profile field

PHPBB3-12216
[ticket/11693] Change sql_build_array to support DELETE

PHPBB3-11693
[ticket/12243] Split custom_profile_fields.html into 1 file for each type

PHPBB3-12243
[ticket/12243] Remove outdated adm/style/custom_profile_fields.html

PHPBB3-12243
[ticket/12231] Add template events to forumlist_body.html

Add events before/after category header, before/after subforums list
to allow add/modify content in respective places.

PHPBB3-12231
[ticket/12248] Make extension details homepage a clickable link

http://tracker.phpbb.com/browse/PHPBB3-12248

PHPBB3-12248
[ticket/12237] Convert yahoo messanger to custom profile field

PHPBB3-12237
[ticket/12237] Regenerate db schema files

PHPBB3-12237
[ticket/12236] Move AOL Instant Messanger field to custom profile field

PHPBB3-12236
[ticket/12236] Fix layout of memberlist search

PHPBB3-12236
[ticket/12249] Fix "Undefined variable: row" when editing profile

PHPBB3-12249
[ticket/12236] Change order of profile fields for new installs

PHPBB3-12236
[ticket/12248] Remove p tag in favor of strong tag

PHPBB3-12248
[ticket/12248] Fix meta_author tags (IDs must be unique)

PHPBB3-12248
[ticket/12248] Use id instead of name attribute in a tags

PHPBB3-12248
[ticket/12248] Remove unused label for attributes and related id tags

PHPBB3-12248
Merge pull request #2086 from VSEphpbb/ticket/12248

[ticket/12248] Make extension details homepage a clickable link
Merge pull request #2080 from nickvergessen/ticket/12243

[Ticket/12243] subsilver2 is missing profile field files
Merge pull request #2075 from Elsensee/ticket/11693

[ticket/11693] Change sql_build_array to support DELETE