Added PyCharm to .gitignore
Added error messages for HTTP 400/3/12 and 500 errors
Added a test case for
find_one() parses ObjectId() if auth_username_field='_id'
Added a test case for debug_error_message()
Resolved dumb conflict
Added check to prevent auth_username_field from clobbering filter condition
Merge branch 'auth_username_field_id' into develop
Merge branch 'auth_username_field_clobbering_filter' into develop
Added extra checking for ObjectId in query
Merge branch 'auth_username_field_clobbering_filter' into develop