Implemented the file use model with access control for file downloads.#129

Open

lsitu wants to merge 2 commits intodevelopfrom feature/file_uses

+902-61

Commits on Jul 28, 2017

Fixes #111 - Implemented the file use model.
lsitu
committed

Commits on Aug 1, 2017

Fixes #111 - Implemented access controll for PreservationMasterFile and
lsitu
committed