Improve SaveDataToStorageActor to support MT

Fixed in

EPiServer.Forms 4.27.0

Created

Aug 27, 2019

Updated

Nov 18, 2019

State

Closed, Acceptance tests pass


Description

When saving data to storage, the returned result could be Guid.Empty, or the save action could fail. But Forms always show that the submit was successful.
To fix this, check the output from SaveDataToStorageActor and show a message if the save action is not successful.
Also, make the SaveDataToStorageActorResult method public.