AOU-1411: Make "Agreement" file type not deletable
"Agreement" document should not be deletable once validated, neither by the depositor, nor by the validator. Only "admin" should be able to edit the file, or delete it.
Closes AOU-1411
"Agreement" document should not be deletable once validated, neither by the depositor, nor by the validator. Only "admin" should be able to edit the file, or delete it.
Closes AOU-1411