Start stylin' by replacing the default font.

This is a temporary choice, probably, but let's get started.
Don't use literals in Angular.js controllers.

Because reasons.
Define a channel class. Minimal style for now.
Awful alternating background.

I'll make this less hideous later.
Always lower-case channel names.
Better looking message box.
Comment.
Remove the unsightly 'send message' button.
Allow enter to work in 'Join Channel' box.
Allow the enter key to choose a username.