Sensor property external_id has been created. Line chart icons have been changed.
The 'popup' page has been improved. Field logger_meters.factor has been updated.
The API now returns specific HTTP error codes.
Field remote_support has been added to table logger_device_type. Validations have been improved in the API.
The 'maximize' button now works for all line chart pages.
Proper HTTP error codes are being returned now.
Merge branch 'ew-dev'