iOS version of Gradesnap

High Priority

1: AssignmentGradePhoto 2: AssignmentStudent - Show 3: Student - Show: Assignments table (and grade)

Low Priority:

1: Student - Edit 2: Assignment - Edit 3: AssignmentStudent - Edit

Next version:

1: Assignment - edit answer key 2: AssignmentStudent - edit answer key 3: NewAnswerKeyViewController: No way to delete rows 4: NewAssignmentViewController: Tapping Answer Key goes to make a new key, not to edit the current one

Known Bugs: