Implement primary endpoints

[evscott]

This is a list of primary endpoints that the application needs available to perform basic operations.

Submissions

• Submit an assignment
• Get a submission
• Get all submissions

Feedback

• Get feedback on a submission
• Leave a comment on a file
• Leave feedback

Assignment

• Create an assignment
• Delete an assignment

Files

• Create file
• Update file
• Get a files contents
• Delete a file

Dropboxes

• Get all dropboxes
• Create a dropbox
• Delete a dropbox