added missing exports for overlay manager

git-svn-id: https://dng.biozentrum.unibas.ch/svn/openstructure/trunk@2588 5a81b35b-ba03-0410-adc8-b2c5c5119f08

modules/gui/pymod/wrap_gui.cc

@@ -50,6 +50,7 @@ void export_Input();
 #ifdef OST_IMG_ENABLED
 void export_data_viewer();
 void export_overlay();
+void export_overlay_manager();
 #endif
 
 #include <boost/python/to_python_converter.hpp>
@@ -128,5 +129,6 @@ BOOST_PYTHON_MODULE(_gui)
   #if OST_IMG_ENABLED
   export_data_viewer();
   export_overlay();
+  export_overlay_manager();
   #endif
 }