* data/ui/developer/window_relationships_overview.glade:
  Change this from GtkWindow to GtkApplicationWindow.
* mode_design/relationships_overview/window_relationships_overview.cc:
  Change the print and page-setup actions to be in the standard
  win. group.
* glom/frame_glom.cc: Add the window to the GtkApplication.
* glom/application.cc: on_startup() : Add a Ctrl P acelerator.