Flip order of _value testing recommended and disliked

ChangeTable2 tests disliked, and then recommended. If both scores are
supplied by two different users, favor the disliked negative score
over the positive recommended score, matching ChangeTable2's own order
and thus avoid a weird case of a red "1" value with no leading +/- value.

Change-Id: Ic2ddac77ff57e4db2490ad6b7c8b6a16c1c90b43
1 file changed