Modified the login/logout system to direct to Django's logout function so that users aren't merely logged out of TWU Pass alone, but also the Cube. Also added a login URL of '/' to the settings file so that by default any pages that require authentication will go to the root of the site which urls.py redirects to login_cube().
Switched the AppSettings form to use a TextArea for AppSetting Values and Descriptions.
Merge branch 'appsettings' into emailmessage