Feature group details

Added a "Group Details" Page

Populates UI with details from the group. Bottom section correctly allows someone to update the Group Name/Description in the backend. 

To Do's:
-Set updating info section to only show up if user is an admin
-Maybe figure out a better way to display Admin names. Using Jquery to update UI seems lame...
I would take the entire group object here and update the backend as needed.   This way if we ever have to update group with mroe stuff, the function signature doesn't have to change.