(Bug 45761) API module wbremoveclaims fail to use baserevid

Base revision id is not pulled in from the params during loading
of the content, and due to this the diffs and later patches will
be wrong.

Change-Id: I77a378b006a6e780b956771d3e16ad6860d1ab49
Merge "(Bug 45761) API module wbremoveclaims fail to use baserevid"