Don't linkify vote images from Mafia games.

Effectively, consider them smileys.
Load Waffleimages images from alternate host.

Waffleimages is an old image host for the Forums. For whatever reason, the
original domain does not work, but someone set up a new one. It's not a 100%
perfect clone but it's worth doing for perusing old threads.
Don't crash splitting URL queries with a bare &

There doesn't seem to be any actual spec relating to the use of a URL query, so
just ignore it. (Other options involving a key of an empty string don't seem
valuable.)
Don't ask to open a URL just copied from a post.

This is done every other time we copy a URL. This one just got missed.