Drop the extra resources/ subdirectory

This subdirectory gets in the way when integrating the inspector
build more fully with GTK+, and does not really add anything.
Just move everything one level up.

gtk/ui/gtkpagesetupunixdialog.ui.h

@@ -0,0 +1,8 @@
+N_("Page Setup");
+N_("_Format for:");
+N_("_Paper size:");
+N_("_Orientation:");
+N_("Portrait");
+N_("Reverse portrait");
+N_("Landscape");
+N_("Reverse landscape");