Fixes for Beta Test

- Corrected FULL_APPLICATION_NAME setting
- Redirecting to engagement page since not all courses have enrollment data

@rocha @dsjen
There are defaults in `base.py`. `FULL_APPLICATION_NAME` doesn't have to be compound. Non-edX implementors have the option of overriding it completely. This is a simple fix for us. Alternatively, @e0d can declare this setting as well.