add ExtendedDofTable info
change interface of mesh filters with extended elts :
   element(mesh,EntityProcessType::LOCAL_ONLY|GHOST_ONLY|ALL)
   boundaryfaces(mesh,EntityProcessType::LOCAL_ONLY|GHOST_ONLY|ALL)
up min() max() with local or parallel eval
fix new mesh filters interface
put values in ghost extended elt for fix visualisation
add pdhv