Issue #2042943 by FabianMeul: Fixed Database table incompatibility.
Issue #1932276 by iamEAP | tobiberlin: Fixed No upgrade path from D6 to D7 version.
Issue #2173799 by iamEAP: Fixed Ensure block cache configuration made through the UI always override code.
Issue #1562700 by jhedstrom, pandaeskimo, helmo, bobojo, timaholt | bastnic: Added Getting back expiration feature into D7 version.