Fix fullscreen mode and D-Bus service entry.

data/eekboard-server.service.in

@@ -1,3 +1,3 @@
 [D-BUS Service]
-Name=org.fedorahosted.Eekboard.Server
+Name=org.fedorahosted.Eekboard
 Exec=@bindir@/eekboard-server

src/server-context-service.c

@@ -141,6 +141,7 @@ on_notify_fullscreen (GObject    *object,
                       gpointer    user_data)
 {
     ServerContextService *context = user_data;
+    if (context->window)
         set_geometry (context);
 }