Merge pull request #10 from mdipierro/master

Pull latest class code.
Merge pull request #11 from mdipierro/master

Pull latest class code.
courses are now linked to themes table

Added reference to themes table from courses. Added view to set course
themes. Added new views to menus.
Merge pull request #76 from groos/master

Added reference to themes table from courses
group chat history page

The group chat history page has been setup along with a navigational menu
item to go to the chat history page once the user is logged in.