Messages have a read/unread property.

* When you show the messages, it marks all of them as read
* even the ones that you wrote
* not quite right yet
Marking messages as read works properly now
New user methods

* messages_sent
* messages
* messages_received
* unread_messages
Fixed some stuff up, made it nice and fancy
Merge branch 'MessagesRead'

Conflicts:
	app/controllers/home_controller.rb
	app/views/layouts/application.html.erb