Fixes #530. if there aren't any workspace, the menu is filled with a message.
Fixes #530. if there aren't any workspace, the menu is filled with a message.

--HG--
extra : convert_revision : svn%3A2a98c5bb-d66c-48ca-a96c-db028a6c31f4/ezweb_platform/src/trunk%402701

rockneurotiko/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud,jpajuelo/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud