Showing class's professor course just for course's coordinator
Tests of ClassUpdateView (not passing yet)
Blocking non-coordinator professor change class's professor
Test fixed (and passing)
New test: test_coordinator_professor_should_can_change_class_professor (passing)
New test: test_coordinator_professor_should_can_change_class_professor
Changed how post permissions are made on ClassUpdateView, tests updated
Test test_assistant_professor_should_can_change_other_data_than_professor_on_its_own_class passing
Refactor
Merge branch '3794-altera-professor'