Update share model to contain subvol name as it becomes the real share name
after any snapshot rollbacks. The share name then becomes just a convinient
name for mount point. Update snapshot model to also contain quota group which
can be retrieved right after it's creation.
Add low level snapshot rollback support.
Fix the share unmount issue by best effort umounting. There's a btrfs bug that
gives device/resource busy error that lingers for a while.
API support for the complete snapshot usecase.
Make webui changes to reflect the udpates in backend snapshot api changes.
Add CLI support for snapshot API
Update acl, nfs and samba views to take into consideration share's new
subvol_name attribute.
Merge branch 'master' into issue#46_snapshots
Add migration file for the updated snapshot model.
Umount a pool if necessary when deleted.
Merge pull request #203 from schakrava/issue#46_snapshots

Issue#46 snapshots