nested routes in routes.rb
update controller and index of question sets for nesting
updated routes, controllers, and views for nested question set resource under class_group
created helper method for setting question set and class group in question set controller and fixed json view for route nesting
fixed spacing in routes
database fix for memberships and remove a link in views
updated models for has_many relationships
Got Angular to show all the question sets on the index page.
Added iconic-foundation and found that it and foundation require jquery, so added that too.