Gitin 0.2.2 Some basic drag 'n drop works now

0.2.2
- drag 'n drop: category to device,
- FMain: add column titles, option in menu to hide empty columns + store in settings, show database host
- Fix save IP address for NIC

0.2.1 - 0.2.0
- drag n drop device to location, fixes

Database modifications:
0.1.9
- add location_id to device
0.1.8
- imagefield to location