Added status reporting for individual downloads.
Added Fedora credentials to space model/form.

Added Fedora host, username, password fields to spaces for
SWORD-related functionality.
Added optional use of Fedora auth creds for SWORD downloads.
Merge remote-tracking branch 'origin/dev/issue-5980-islandora' into 0.x

Conflicts:
	storage_service/locations/api/sword/helpers.py