wrote test to validate response of load_index
wrote test to validate response of load_graph_data
refactored test_views to use jsonvalidator
added test for load_microblogging and made view conform
added test for load_text and made view conform
added test for mark_node and made view conform
added test for load_user_info and made view conform
added test for load_user_settings and made view conform
added test for logout
added TODO items for store functions