Aker-Rails needs to be in the locked gem environment, too.
Put event types on its own line.

Event type names can be quite long, and many do not fit in a six-column
space.
Introduce EventType model.
Event type autocompletion.
Factor out border style.
Autocompletion styles.

This commit also gets the ball rolling wrt a custom jQuery UI theme for
Pancakes.  (I think all existing ThemeRoller ones drag in too many
assets.)
Eliminate placeholder binding on MultiSelect view.

It's useless now, because tag-it is managing the input view.

I'd like for this to still work, though; will have to find some other
way.
Load event types from fixtures.

While I think I'll keep using the fixture adapter (or some sort of local
storage -- maybe HTML5 localStorage?) to load these, I definitely want a
way to load event types that doesn't require shoving a huge JSON text
into source code.  Consider the changes to fixtures.coffee as temporary.
(More temporary than the usual ephemeral nature of software.)