[ticket/12838] Add template events to acp_ranks.html

PHPBB3-12838
[ticket/12838] Add _before versions

PHPBB3-12838
[ticket/12838] Update events.md

PHPBB3-12838
[ticket/12838] Add core events to acp_ranks.php

PHPBB3-12838
[ticket/12838] Simplify special rank template conditional

PHPBB3-12838
[ticket/12838] Add raw row-data to acp_ranks core event

PHPBB3-12838
[ticket/12838] Allow for extra columns in cache obtain_ranks()

PHPBB3-12838
[ticket/12838] Update events.md to RC3

PHPBB3-12838
[ticket/12838] Update RC2 to RC3

PHPBB3-12838
[ticket/12838] Simplify normal special rank array creation

PHPBB3-12838
Merge pull request #2720 from PayBas/ticket/12838

[ticket/12838] Add ACP events to acp_ranks

* PayBas/ticket/12838:
  [ticket/12838] Simplify normal special rank array creation
  [ticket/12838] Update RC2 to RC3
  [ticket/12838] Update events.md to RC3
  [ticket/12838] Allow for extra columns in cache obtain_ranks()
  [ticket/12838] Add raw row-data to acp_ranks core event
  [ticket/12838] Simplify special rank template conditional
  [ticket/12838] Add core events to acp_ranks.php
  [ticket/12838] Update events.md
  [ticket/12838] Add _before versions
  [ticket/12838] Add template events to acp_ranks.html