Add a StaticPages controller
Finish static pages
Eliminate repetition (solves exercise 3.1)
Add a Contact page (solves exercise 3.2)
end ch3 with all exercises and advanced testing
Merge branch 'static-pages-exercises'

Conflicts:
	app/controllers/static_pages_controller.rb
	app/views/layouts/application.html.erb
	app/views/static_pages/help.html.erb
	app/views/static_pages/home.html.erb
	config/routes.rb
	sa_notes_new
	test/controllers/static_pages_controller_test.rb
	test/test_helper.rb