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
[ticket/12715] Cleanup comments in \phpbb\di\*

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

PHPBB3-12715