Fix a couple of Em controller filenames.

The filename doesn't actually matter in this case, but I don't suffix
any of the other ones with _controller, since they're already in the
controllers folder.
Bootstrap and a nav.

Well that took longer than I expected.  Wanted to experiment with
Bootstrap + LESS to see if I could get all of those bootstrap classes
out of my markup, but it turns out that it doesn't work like that at
all.  It works halfway, just enough to make you think that you can get
it to work completely.  Oh well, I'll just stick to using thier grid
mixins and that's at.
First pass at bootstrapping the sources section.

I'm still awful at this, but it looks a lot better.  The sources list is
now a master-detail style thing instead of separate show and detail
pages.
Bootstrap the boards list.
Style the new board explanation screen.

Even added a cloud!  I'm practically a designer.
Biiiig commit to style slide page.

Should've split up the part where I styled the perspective palette, but
I got ahead of myself.  Still haven't styled the perspective
configuration thing.
Style perspective configuration.

Pretty ugly.  That thing just does not work well.