please test gdesklets-0.30 on 4.x

[Franz Klammer]

> these are the issues i'm try next to figure out before send-pr
> an update:
> 
> - SysInfo/network info:
>     bytes in: 0 B
>     bytes out 47.70 MB
>     packets in: 10000000
>     packets out: 0
> 
> - Calendar: Sensor didn't load.

on more SysInfo problem i try to solve - which i think is not
a SysInfo bug:

the list of network-interfaces and partitions will be append
to the existing list every time when open the configure dialog.

e.g: after three time open the dialog i have three rl0 interfaces
in my list. the same with the partitions.

franz.