3779 Update qTip plugin

http://code.google.com/p/otwarchive/issues/detail?id=3779

We were including jQuery migrate to use an old version of qTip on Tag Set Nominations. The new version of qTip doesn't need that.
Yep! The default colors for qTip were basically the same shades of yellow we use for caution messages, but we use qTip for simple information messages. So now it's blue, like our information messages. (It's noted in a comment on the issue: https://code.google.com/p/otwarchive/issues/detail?id=3779#c4)