Translation deletion on null assignment.

[lesf0]

Hello!

I don't understand well why the "value" field should be nullable. I think it would be better if assignment of null/empty value mean deleting of this particular translation.

I currently building an multilingual site, in which admin has ability to enter texts in different languages. If the text for some language wasn't filled by site admin, or was cleared, it obviously means "Translation is not available yet, English text should be used instead", not "Nothing should be displayed in this language". For now I have to handle it in controller, but I think this should be done by translation trait itself.

[ronappleton]

I think this is a valid point, we should fallback to the default language.