Schema migration for source metadata

Change-Id: If0997e93fdd4d63e519a46387b8a123361988ef4
DUPs should be dropped, not rejected

Change-Id: I633b41c42a794ff2a76b00007fe395d9f097cc65
Don't encode htmlentities in log messages

Partial revert of 51c159932857868fba18b2d3f682f8092b8fa7ce

Change-Id: I7b5e91fb6ac258801efa6cef57b59e3d9c4bd450
(FR #1301) Require Postmark Date, sometimes

IF Contribution Type = Arizona Lockbox AND Received Date >= 2013-12-01 AND Received Date <= 2013-12-31
  Postmark Date field is required, you cannot save changes otherwise
END IF

This is a temporary convenience and will be reverted when it's no longer
needed.  Note: the schema change is not needed for production, but should
be harmless.

Change-Id: I12780e9738af7481cd4849aaa95594d5c1fe0316