Missing possibility to delete/update file entities of other users incl. user/1

Currently it's only possible to delete a file entity by the owner of an file entity. There is no additional condition defined for any permission or even an exception for user/1 (main admin user).

Proposed solution:

• Add existing or new permission to delete file entities.
• And maybe define an exception for user/1 to delete file entities like other entities.

Original Issue summary:

I've faced with problem when user with id '1' (main admin user) can't delete file entities created by another user. I used view_bulk_operations for deleting file entities. I thought user 1 has absolute access to all entities.