Update datetime range hack for Civi 4.2

Change-Id: I9dc892e24c3f1f3dcbc3cf38eb79f2ffb46cd7a3
ignore sites/default/files

Change-Id: I79d5e5b8cf3c854dd45ebf9ab43d2bf8ef8fe973
submodule update: civicrm

Change-Id: Ia991468dc776f86de7cac751f120ab2d91f56894