changed warning/success message system to a new style
unified design of "hints" in form interfaces
fixed small bugs in "network" and "partition" plugin interfaces
"partition" and "disks" plugins: show blockdevice size during device selection
german translation for "disks" plugin added
added some log entries
use threading module instead of "fork" for background formatting
redirection for "network" plugin fixed
empty return value of plugins defaults to plugin overview page
