Merge pull request #47 from bradylarson/master

Force api calls to get data from server, not cache.
Fixed missing names and avatars in discussions
Merge pull request #48 from matthewrice345/master

Fixed missing names and avatars in discussions
Added needs grading count to CoursesAPI
Merge pull request #49 from hhoang/master

Added needs grading count to CoursesAPI
Added discussion_entries to Submission.