* upstream/develop: (22 commits) [ticket/11206] Remove includes to non-existent files from download/file.php [ticket/11205] Fix merge conflict in readme.html. [ticket/11202] Check response success before content assertions. [ticket/11204] Reindent. [ticket/11198] Remove additional asterix as /** is doc-block only [ticket/11200] Add a reminder comment. [ticket/11202] Custom message does not make sense here, delete it. [ticket/11202] Check response success before content assertions. [ticket/11202] Add a heuristic function to check for response success. [ticket/11200] Make cache available during container construction [ticket/11199] Match cache purge container files against container_* [ticket/11199] Purge dumped container correctly on cache purge. [ticket/11199] Revert merge of 'marc1706/ticket/11199' into develop [ticket/11199] Cache purge does not remove dumped container [ticket/11198] Store the swapping partners in vars and simplify the logic [ticket/11198] Correctly set links after an item is moved up/down with AJAX [ticket/11197] Prefix the css classes for the small arrow with "arrow" [ticket/10879] Remove arrow icon from attachment link in editor [ticket/11195] Condense logic, remove improperly formatted if() [ticket/11190-develop] Functional tests purge cache before running. ... Conflicts: tests/test_framework/phpbb_database_test_connection_manager.php