Previously, media uploads were associated with one note upload but
served regardless of the requesting user's permission. As we have
a fine-grade permission system in place, we can use this as well
for enforcing permission checks on media uploads. In order to make
an upload reusable across multiple notes, this adds the capability
to link one media upload to multiple notes and unlink that accordingly
again.
Signed-off-by: Erik Michelson <github@erik.michelson.eu>
Erik Michelson
c2ccf48c39