Added a top nav.
Basic styling changes.
Merge branch 'add_some_css' into add_authorization_to_private_messages
added improvements to top nav
Added a lesson index page and a custon lessons page for a user, where a user and see ONLY his own lessons's.
added a seperate profile page.
Added a test for testing for the existance of an Edit Profile button on the profile page.
Merge branch 'master' into add_authorization_to_private_messages

Conflicts:
	spec/features/user_can_see_profile_page_spec.rb
Finished adding profile tests.
Fixed problem with instance and local variables.