Remote local copy. Made copy directly to the remote.
Move config copying before first rsync

So we make sure that all remote dirs already created before rsync.
Don't use `vzctl chkpnt` when using lvm snapshots
Create STATE_DIR whether it's doesn't exists
Fix rotation
Implement new variable KEEP_REMOTE

It controls keep or not remote plain copy of a CT private area. Useful
when you don't have a much space on the backup server.
Add vim directives
Implement signal handler

We need it to prevent stale lvm snapshots in cases of cancelled backup.
Enable concurrent jobs and min priority by default
Use config file from the same dir or from /etc/
Run copying of the VPS configs in proper order

It shoud be run after second rsync.
Unset mountpoint after umouning lvm snapshot

Prevents second umount try at the final, when exit handler is executed.
Move umount actions to separate function
Move cleanup actions to cleanup handler
Add some options to ssh