[ticket/12719] Fix action-bar spacing

PHPBB3-12719
[ticket/12719] Fix pagination conflict ions with normalize

PHPBB3-12719
[ticket/12719] Fix responsive menu icon as well as clean it up

PHPBB3-12719
Merge branch 'ticket/12719' of https://github.com/hanakin/phpbb into ticket/12719

* 'ticket/12719' of https://github.com/hanakin/phpbb:
  [ticket/12719] fix responsive menu icon conflict ions with normalize as well as clean it up
  [ticket/12719] Fix pagination conflict ions with normalize
  [ticket/12719] fix action-bar spacing