Some minor changes to the mockup.
Copied mockup to mockup.html, and messed around.

I more or less cleared index.html, to do some backbone stuff.

I tried to prepopulate a list with players, and render it. Which
obviously didn't work.

I still have to find out what's wrong; probably a lot, since I
am still clueless. Committing this already, because it's getting
late, and I have to get up early tomorrow.