Issue #1880368 by stephen.colson, echoz, babbage: More comprehensive fix for form elements can break out of their bounding divs and whatnot.

Issue #1880368 by dead_arm, tim.plunkett, stephen.colson, irk, ultimateboy, meyerweb, RobW, peruvianidol, babbage: Fixed Danling search box on add blocks page.

#299308 by redndahead, Dave Reid, dropcube, catch, redndahead, and dbabbage: Add POD to installation requirements.

- Patch #343502 by Dave Reid, sun | dbabbage, Dries, boombatower: allow tests to require and test existence of modules. Required to make testing contributed modules possible.

- Patch #306151 by agentrickard, David_Rothstein, Dave Reid, dbabbage, moshe weitzman: automatically install/uninstall schema.