Changed show group page

Added link to edit group directly from the show group pages
Added default groups view

Create a consistent view for all group management views. Standard
headings and titles throughout
Changed edit group page

Moved cancel button location
Changed show group page

Added links to user profiles on the show group page
Modified group management system

Changed create group page, to provide continuity with editing page
renamed groups.edit.js to groups.multiselect.js as it will be used on
create and editing pages
Added group delete functionality

Added the controller method for deleting a group