Adding the ability to review a single student as staff

This will allow anyone to take an anonymous user ID and retrieve all related information on the given question, including the submission, assessments created by the student, and assessments on the student's submission.  

@talbs I'd like to snag another quick review of my Templates and Styling
@srpearce I'd like to quickly review all the strings in the template and mixin
@wedaly I'm going to verify this in LMS / Studio, and I want to create some Jasmine tests, but it is otherwise ready to go. 
@gradyward FYI

Remaining to do:
* Jasmine tests
* Test through LMS / Studio.