[WEBENTITY] display error message from API response when editing a WE's metadata

[paulgirard]

In web entity, if I decide to change home page to a web page which does not match a prefix, the api replies :

[{"message": {"homepage": "WARNING: this page does not belong to this WebEntity, you should either add the corresponding prefix or merge the other WebEntity."}, "code": "fail"}]

The Interface correctly warn that there were an error but does not display the useful message.

The error message returned by Hyphe should be displayed in the notification bar as a feedback so that the user knows he should change his input.
Even better, inputting an outside-prefixes homepage could trigger a modal proposing to add the corresponding prefix or merge the corresponding entity if it exists the same way it does in the Crawls page when adding a new startpage

[paulgirard]

Might be true elsewhere.

[boogheta]

it used to do it, but @jacomyma didn't redo it in his refactoring of the edit WE menu :p

[boogheta]

It should be fixed by copying the API error message within the status header bar