add middle dart position computing

a define in tuto*.h allow testing with gmap

small modif for warning in image class of MC
removing of unused code (testing) in map2

TopoRender & Topo3Render can now directly render Map & GMap (see tuto1 & tuto5)
Correction of bug in gmap2 (face of boundary was not marked)

Use SelectorDartNoBoundary for rendering without boundary, example:
        SelectorDartNoBoundary<PFP::MAP> nb(myMap);
        m_render_topo->updateData<PFP>(myMap, position, 0.9f, 0.9f,nb);

update scripts