test groups, add auth test
add mongodb, traversal resources, cities view based on http://zaiste.net/2013/12/building_a_restful_api_with_pyramid_resource_and_traversal
add custom json renderer, add get city
add cover report to ignores
typo
add some comments
remove mongo.conf option from add_mongo_db
set csrf token in reponse headers
add empty response handling for list_cities
csrf_token is now set in headers, remove that from json response
set X-CSRF-Token only if user is logged in
login only if not already logged in
set response type to json for all responses in mongo json renderer
Merge branch 'traversal'