Fixed: No user input for new college/department

Fixed: Allows similar user if !user
Fixed: Shows ‘None’ on University Page if !user
Fixed: Update univ on new user
Fixed: Update univ if user position is changed to ‘Not Applicable’ (on
edit)
FIXED: Uses department_ID when retrieving department details

- check if college/department has programIDs before retrieving user list
- before updating user when updating college/department details, check
if user_ID exists (if none selected)
- update univ on add/edit user