Also use good info menuitem in gc_occupants menu

data/glade/gc_occupants_menu.glade

@@ -94,7 +94,7 @@
   <child>
     <widget class="GtkImageMenuItem" id="information_menuitem">
       <property name="visible">True</property>
-      <property name="label">gtk-dialog-info</property>
+      <property name="label">gtk-info</property>
       <property name="use_stock">True</property>
     </widget>
   </child>