fix contact form validation
Merge remote-tracking branch 'upstream/master'
add shared errors
Merge remote-tracking branch 'upstream/master'

Conflicts:
	app/controllers/messages_controller.rb

	modified:   app/controllers/messages_controller.rb
	modified:   app/views/pages/contact.html.erb
	new file:   app/views/shared/_error_messages.html.erb
fix contact form validation