* develop: (175 commits)
[feature/ajax] Remove strange non-breaking spaces from approve button
[feature/ajax] Add entirely unrelated but nice newlines
[feature/ajax] Unify phpbb_json_response instantiation
[feature/ajax] Fix acp_styles activate_deactivate ajax callback name
[feature/ajax] Send correct activate/deactivate JSON response in acp_profile
[ticket/10270] Alter background colors for posts
[feature/ajax] Remove not working module enable/disable ajax code
[feature/ajax] Replace static call to phpbb_request with OO
[feature/ajax] Remove quick-reply AJAX handling until we have something good
[ticket/10270] Changing close button for ajax popups
[ticket/10270] Disabling links in disappearing content
[ticket/10291] Fixed an AJAX bug on quick reply form submit.
[ticket/10273] Fixed accepting / denying posts AJAX.
[ticket/10272] Removed code that was prevent event propogation in AJAX.
[ticket/10291] Fixed a bug in the quick reply AJAX.
[feature/ajax] Handle acp_modules error cases with JSON response
[feature/ajax] Fix filter check, quick mod tools data-attribute
[feature/ajax] Use the error handler
[feature/ajax] Generic error handling with a phpbb.alert box
[feature/ajax] Change filter semantics, some minor adjustments
...
Conflicts:
phpBB/adm/style/acp_styles.html
phpBB/includes/acp/acp_styles.php