fixes:
- new wlanX entries in /etc/network/interfaces were not created under hot-plug class. this caused ifup and ifdown to ignore the interface if option --allow auto was used. as a result, this was causing wlanX was skipped during network-interface job operations
- in case wlanX was not yet present in .../interfaces file, it wasn't possible to configure it via config-xbmc (whole network submenu was greyed out)
- setting/un-setting of class auto for ethX devices
- typo fix for btrfs-auto-snapshot
- gettext dialog fix for timezone