Improvement on External Sources fields in template
Fields with options provided by external sources shall present more information to the user
- a clear indication that they are coming from external providers
- a clear indication of the provider that is supplying the data
- proper visual signals that data are being fetched from external provider. Currently no indication that fetching from an external source is taking place (dropdowns are not easy to identify if there is an error, no data, or just a delay in fetching results).