Refactor portfolio controllers.

- No prototype method.
- Angular module declaration at the top.
- No promise resolution in the controller constructor.
- All promise resolutions are now in a service defined below the
controller.
- remove evaluations for now.
Crude UI of assessments


Add Form to upload results.
Add angular-loading-bar
Disable spinner.
Fix karma config
Tweak schema
Merge pull request #28 from dinoboff/master

Add UI for exam upload