Fix STORE-292

The issue involved not been able to update file type fields (e.g.thumbnail, banner or url in the case of ebooks). In addition the edit form had the tendency to over write the uuid of the storage fields. As a result if an asset was edited in the Publisher the storage fields were changed to the publisher storage url.

The fix involved supporting file input types in the edit form and preventing full urls to be written to storage instead of the uuid/file value.


To do:
- The label used to show the existing url needs to be aligned correctly.
- If a user presses the update field after updating a file field, the file will be uploaded again causing a new UUID to be generated. (This can have storage implications).