Improved API to handle better a different start method.
dock.LoadConfig: Now creates the empty config and handle the error.
+ some documentation
New lib: sysinfo - library to get some linux system information. Currently only disks and network activity.
DiskSpeed: updated to use the new API, which is a generic evolution of the old version.
New applet: NetActivity - Monitor network activity.
Rewrite of netspeed, with multi interfaces monitoring and more click actions. It's almost a clone of DiskSpeed