remove 'remove note' button from non-administrators, and change permissions in the back-end so only administrators can remove notes.  This is a simplest-possible solution, without changing the data model, and therefore has some oddities, like existing notes can be edited and thus result in new notes in addition to the old note they are an edit of.
Merge pull request #254 from DOAJ/issue232

remove 'remove note' button from non-administrators, and change permissi...