Testing (Karma = e2e & unit, API = mocha)

[lefnire]

1. Client code test: Karma (e2e & unit)
2. Server code: mocha unit tests

This is an enormous task, and I'm actually going to make it one of my HabitRPG Dailies to add one test / day. I'm just creating this ticket to get it on the radar, will reference some initialization / salient commits to the ticket, & close it

[lefnire]

Sheiße, we're gonna have to figure something out for the e2e tests. They can't run the server (esp. if we want CI like Travis on GH), but the server is what generates the html files from Jade + SSI.

1. We could get away without writing e2e tests, and just have solid controller specs
2. Or we could make the jade compiling a Grunt step instead of Express... not wait, we can't do that because we need to inject server variables from the controller routes. Hmm..

[lefnire]

@djuretic has been all over this, closing this ticket because he's awesome.