Main menu working.
Renamed "Home" to "Editor".
Splitting client js.
Yup, bringing in Open Sans now.
Going to the SPA.
Adding tests for basic server.

They're really crummy tests right now, but I don't want to test all the
server setup stuff until I'm sure it's in the right place.
Tests for client app.
Switched filename back to index.html from editor.html.

I'm indecisive.
Reworking how main menu works and adding tests.
Fenrir server can be restarted.
Don't send app into server as option; make it emit event instead.