E910: Integration and Testing: Penalty Wizard

Penalty Wizard's integration with the new New Expertiza
Grades controller bug fix

Bug fix for grades controller pertaining to penalty wizard. Addition of
nil values bug fixed!
Penalty Unit feature added

The penalty unit feature is added as requested in the requirement.
E910 Penalty Wizard integration

New test cases added
Add a name specifier to a late_policies remove_index migration
Merge branch 'master' into e910

Conflicts:
	app/controllers/assignments_controller.rb
	app/controllers/grades_controller.rb
	db/schema.rb