Multiple table inheritance with ActiveRecord
still mapping to db
able to create Tutor and assoicate to User model, still not yet add Student table into db
remove redundant erb files
base user employer tutor models
create employer table and modify job & tutor table
Merge remote-tracking branch 'upstream/master' into home_page_mock_up

Conflicts:
	app/models/user.rb
	config/application.rb