Create assignments
Assign assignments to students
Restrict assignment creation to admins
View my assignments
Add assignment percentage
Add assignment index and averages
Move assignments to /admin
Rename admin link
Clean up assignment spec
Import assignments through CSV
Remove method to change assignments per role
Add a link to upload assignments
Move assignment uploads to the admin namespace
Float students in seating chart
Merge branch 'assignment-9'
Simplify import record counting

At @rockwood's request