re-adding disconnect test


git-svn-id: https://gnunet.org/svn/gnunet@31481 140774ce-b5e7-0310-ab8b-a85725594a96
restructuring configs + enabling additional plugins


git-svn-id: https://gnunet.org/svn/gnunet@31482 140774ce-b5e7-0310-ab8b-a85725594a96