[INTERNAL] GUI menus were not working

Seems this plugin.xml is the new evil -.-
Again the refactoring of class / package names
have not affected this file.

Change-Id: Ibb31428774e4e85dac4fa42236d7eb01aeec5244
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1437
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>