[ticket/12608] Updated tests

PHPBB3-12608
[ticket/12608] Add styling (CSS class) options to notifications

This will allow different notifications to have different styles

PHPBB3-12608
[ticket/12608] Clean up whitespace

PHPBB3-12608
[ticket/12608] Improved LTR and various bugfixes

PHPBB3-12608
[ticket/12608] Remove somewhat redundant reported color style

PHPBB3-12608
[ticket/12608] Changed get_styling() to get_style_class()

PHPBB3-12608
[ticket/12608] Add subSilver

PHPBB3-12608
[ticket/12716] Add the missing parameters in the call of clearToken

PHPBB3-12716
[ticket/12680] Still some problems with displaying the nickname in ucp

PHPBB3-12680
[ticket/12715] Cleanup comments in \phpbb\auth\provider\*

PHPBB3-12715
[ticket/12715] Cleanup comments in \phpbb\avatar\driver\*

PHPBB3-12715
[ticket/12715] Cleanup comments in \phpbb\cache\driver\*

PHPBB3-12715
[ticket/12715] Update console command cache:purge comments

PHPBB3-12715
[ticket/12715] Update console command config:* comments

PHPBB3-12715
[ticket/12715] Update console command cron:* comments

PHPBB3-12715
[ticket/12712] Remove unneeded GROUP BY clause to fix query for mssql

PHPBB3-12712
Merge pull request #2599 from marc1706/ticket/12712

[ticket/12712] Add user_password to GROUP BY clause to fix query for mssql

* marc1706/ticket/12712:
  [ticket/12712] Remove unneeded GROUP BY clause to fix query for mssql
[ticket/12715] Cleanup comments in \phpbb\controller\*

PHPBB3-12715
[ticket/12715] Cleanup comments in \phpbb\cron\*

PHPBB3-12715
[ticket/12715] Cleanup comments in \phpbb\db\*

PHPBB3-12715