remove extra print
add user model to testapp models
add resource for User (authenticated model)
split get_concrete_model into two: get model by name and by meta
add request object to resource methods
add user model investigation from current resource.
check authentication for anonymous user
add authentication for UserResource for test application
add UserResource filtering for resource model
exclude password from user fields
add django admin to test project. It allows users to login
Merge branch 'feature/user_related_models_get' into develop