FreeNAS Code

Temporarily workaround an issue where storage.forms doesn't expect an
exception from the model. This can happen if the volume have been
removed with bruteforce.

use same factory reset procedure for GUI as for netcli

commit progress for alert system;
fix typo

use ONLINE for volume status even for gmirror,gstripe,graid3 (UP,COMPLETE);
move status check from MountPoint to Volume

fix a few quirks found by pylint

warn user of existing shares and ask permission when deleting a volume

Instead of throwinig a backtrace, do a try..catch construct and handle the
error.

Fix typo (we should unify the humanize_* functions' naming).

Add a new field so replication can do a "reset once" operation, which in turn
destroies remote target for once and then revert to normal operation.

While I'm there, also improve the detection of remote filesystem and snapshots.

It's not needed to specify 'late' with new ix-fstab script, simplify the
logic a little bit.