Design integration

This integrates the latest design for ok with the api. 

This isn't great code on the front end and it certainly needs a lot of work. I wanted to get something out first so that others can take a look. 

The dashboard is now available as the root. 

Known issues:
- [x] Clicking on the dropdown takes two clicks
- [x] None of the partial links (submissions, assignments) work from the dashboard.  @sharadmv - could you take a look at this? I've tried using angulars built in ui-sref links - but I'm not sure how that works inside of a path. 
- [x] Dashboard isn't the first page that students see yet
- [x] Angular code is pretty messy
- [x] HTML is pretty messy
- [x] Login link is iffy . 

This should be ready to merge.