Fixing logout link

Link now works from any page.
Changes to user/site interaction

Several changes to urls/views. The default page loaded is now the
index. Login views have been condensed into a single view which
redirects to the home page on login. All views which require
authentication have been marked with the login_required decorator.
Creator the logout_required decorator to restrict access to
authenticated users where appropriate (they should not be able to
access the login page, etc.)
Changed the default login url in settings.py
Merge branch 'master' into erich_dev

Conflicts:
	goodnight_lead/urls.py
Resolving conflict with master

In urls
Merge branch 'erich_dev'