Revert "Makes the new clobberer ui compatible with the old endpoints."

This reverts commit c998d69fb2339110b0edceb16fa5247236344795.

Conflicts:
	relengapi/blueprints/clobberer/__init__.py
Adding the as_unique method to ClobberTime allows all clobbers to be updated when possible. This will greatly reduce load on the database.
Removes all references to 'master' as a field. This field has been deprecated for some time and can now be removed since old-clobberer is no longer being supported.
Merge pull request #22 from mrrrgn/update-or-insert

Update or insert