Last revision only as default
Last revision only as default

Is already the default for mediawiki watchlist and people complain
if it isn't the default.

Change-Id: I8319705267c39c7b71e212a8c3aead5a55bdbd61

wikimedia/labs-tools-crosswatch,wikimedia/labs-tools-crosswatch,wikimedia/labs-tools-crosswatch,wikimedia/labs-tools-crosswatch