Network Monitor plugin: provide interface list in configuration

... and change settings "live".
Allow commandline arguments for windowmanager setting

This fix gives the option to specify startup arumgents
for the windowmanager setting.
Merge branch 'master' of git://github.com/nebulon1234/razor-qt (#552)
fixed #550 Wallpaper not centered, Color does not fill whole BG
Fixed #538 razor-panel: Restore (a minimized window) is not working while using Fluxb
Merge branch 'master' into new-panel-api
Add moveItem method to RazorGridLayout
The QuckLaunch plugin was ported