[ticket/12862] Add Border

PHPBB3-12862
[ticket/12862] Resize popups consistently

PHPBB3-12862
[ticket/12831] Optn to prevent setting HTTP headers

https://tracker.phpbb.com/browse/PHPBB3-12831

PHPBB3-12831
[ticket/12809] Fix select button and dropdown list items in RTL.

PHPBB3-12809
[ticket/12809] Remove obsolete rules and selector.

PHPBB3-12809
[ticket/12809] Restore text-align for the pagination.

PHPBB3-12809
[ticket/12506] Reposition post-buttons for compact layout

PHPBB3-12506
[ticket/12506] Reposition buttons to make room for "online" banner

PHPBB3-12506
[ticket/12506] Fix responsive profile min-height (no avatar)

PHPBB3-12506
[ticket/12506] Fix search result h3 margin

There are no buttons present, so don't need to do all this stuff.

PHPBB3-12506
[ticket/12822] Remove "None" option from avatar select boxes

This option is just used for deleting avatars for which we already have
a checkbox.

PHPBB3-12822
[ticket/12822] Add method for deleting avatars and use confirm_box

The method will take care of the actual deletion process in the avatar manager.
Additionally, we'll be using a confirm box while deleting the avatar to prevent
users from accidentally deleting their avatars.

PHPBB3-12822
[ticket/12822] Fix test runs of avatar manager_test

PHPBB3-12822
[ticket/12928] core.mcp_reports_gather_query_before

Adding the core.mcp_reports_gather_query_before
event to mcp backend.

PHPBB3-12928
[ticket/12671] Possibility to use NOT LIKE expression

PHPBB3-12671
[ticket/12794] Properly validate google+ field against valid character set

PHPBB3-12794
[ticket/12671] Possibility to use NOT LIKE expression

PHPBB3-12671
[ticket/12671] Possibility to use NOT LIKE expression

PHPBB3-12671
[ticket/12671] Possibility to use NOT LIKE expression

PHPBB3-12671
[ticket/12951] Added editorconfig

PHPBB3-12951