Added support for non specified _pw fields.
Verifying images on download.
Fixed wrong call in image verification.
Backups are now SHA1 checked.
Fixed bug that prevented to restore from remote backups.
fixed problem with describing snapshots that have a sha.
Added sha1 to fifo-created images.
Fixed bug that caused backups to register as snapshots.
Fixed bug that caused backups to register as snapshots.
Merge branch 'test' into dev