Merge the shared queries and queries endpoint into a single endpoint
Call super get_queryset in QueriesResource get_queryset

This fixes the issue where session-based lookups were disabled since
the behavior of QueriesResource get_queryset only used the user
property on the request object.
Fix location of call to super in QueriesResource get_queryset
Merge pull request #107 from cbmi/merge-query-resources

Merge the shared queries and queries endpoint into a single endpoint