[ticket/12038] Check that the move action succeeded before moving the rows.

PHPBB3-12038
[ticket/12038] AJAXify move up/down buttons in the smilies/topic icons page.

PHPBB3-12038
[ticket/12038] AJAXify move up/down buttons in the module management pages.

PHPBB3-12038
[ticket/12038] AJAXify move up/down buttons in the permission roles page.

PHPBB3-12038
[ticket/12038] AJAXify move up/down buttons in custom profile fields page.

PHPBB3-12038
[ticket/12038] AJAXify move up/down buttons in report/denial reasons page.

PHPBB3-12038
[ticket/12038] Use $move_executed in place of $db->sql_affectedrows().

PHPBB3-12038
[ticket/12038] Do not rely on stale order value to move items.

This makes it possible to move the items more than once with AJAX.

PHPBB3-12038
[ticket/12038] Free query results.

PHPBB3-12038
Merge pull request #1920 from prototech/ticket/12038

[ticket/12038] AJAXify move up/down buttons for various ACP pages.