change a bit the way backups are organized into dirs, to make it easier to refer to a specific backup
add function for restoring a backup. Make sure pootle filesystem gets compressed without trailing dirs. Still needed to stop/start the server
add -B option to restore a backup
use the right loop type for reading sql output
move is_pootle_server_up function to api_http
Merge pull request #45 from dsanz/backup-improvements

Backup improvements