Add Branch and Franchise entities
Merge branch 'enrollments' of github.com:highnotes/eardrums into enrollments

Conflicts:
	app/admin/branch.rb
	app/admin/franchise.rb
	app/models/batch.rb
	app/models/branch.rb
	app/models/course.rb
	app/models/franchise.rb
	app/models/user.rb
	app/views/layouts/_staff_menu.html.slim
	db/schema.rb
	spec/factories.rb
	spec/factories/branches.rb
	spec/factories/franchises.rb
	spec/models/branch_spec.rb
	spec/models/course_spec.rb
	spec/models/franchise_spec.rb
	spec/models/user_spec.rb