clean up code in assignment model and delete unnecessary views
cleanup code
generate staff/assignments controller
build out staff/assignments controller with basic CRUD actions
update paths in staff/assignments controller
build form for staff to add/edit assignments
update routes for staff side of assignments
update paths in staff/assignments controller and actions with proper methods
update staff assignments form
build out staff assignment edit/new/index views
add migration to rename column on assignments table
migrate db to rename column
update to reflect new column name
update links on staff assignments index to correct paths
change assignment description to text_area
build out basic show page for staff/assignments
update student assignments controller with basic CRUD actions
build out basic index view for student assignments
add back link to staff assignment show view
update staff assignments controller to ensure staff on all actions