Fixes vimeo hook by lifting db restrictions

[alappe]

A hidden file would not be found with the DefaultRestrictionsContainer in place and thus cannot be unhidden.

[lochmueller]

Thanks. Merged. Perhaps at least the DeletedRestriction should checked in this context?

[alappe]

Thanks! I thought about the DeletedRestriction too, but in the context of the file backend list, deleted files would not show up at all, would they?

[lochmueller]

Perhaps your are right... I do not check this in detail ;-) ... So we keep the current state.