Load more

The load more errors were actually a result of two things : the refereed/database facet widgets were getting "load more" tacked back on after it was disabled during processResponse, and the loading view wasn't hiding itself because it wasn't listening to collection "add "and "noneFound" events.

I also made the facet templates easier to understand by putting the load more button there from the beginning (instead of adding it with jquery later). I also removed the ":first" selector from the widget-options.bottom selector since [I don't think it was doing anything](https://developer.mozilla.org/en-US/docs/Web/CSS/:first)

This should address issue #120