Modified users_controller api class
Modified 'status_messages' api class
Modified api controller classes
Added test methods for api_controller.rb
Moved 'validate_user' method into 'api_controller.rb' and test
Modified api method names in a proper way
Wrote test  cases for 'get_user_person_list' api method
Wrote test cases for 'get_users_aspects_list' and 'get_user_followed_tags_list' api methods
Wrote test cases for 'get_user_details' api method
Wrote test cases for 'get_user_person_handle_list' api method
Wrote test cases for 'get_app_scopes_of_given_user' api method
Wrote test cases for 'edit_email' api method
Wrote test cases for 'edit_first_name' api method
Wrote test cases for 'edit_last_name' api method
Wrote test cases for 'edit_user_location' api method
Modified users_controller api class
Modified status_messages_controller api class
Modified comments_controller api class
Added factory for tokens