Student Management

- ability to manage students for a particular exam
     - search for student by name
     - see student's 'status' for the exam (written, in progress, not
written, overdue)
     - change individual student's allotted time

DOESN CURRENTLY WORK, ONLY PROGRESS COMMITTED
Merge branch 'master' of https://github.com/lorencs/Ualberta-Assessment-Tool-Prototype