Use DOFs from parmg in P1- and P2-Mapper

• Repair the parallel assembling when using second order FEs.
• Change the grid in film-on-substrate from UGGrid to YaspGrid, because UGGrid lacks face communication for the interface type All_All_Interface. This merge requests needs: https://gitlab.dune-project.org/core/dune-common/merge_requests/672 or https://gitlab.mn.tu-dresden.de/paraphase/dune-parmg/merge_requests/11

src/film-on-substrate.cc

@@ -16,6 +16,7 @@
 #include <dune/common/parametertreeparser.hh>
 
 #include <dune/grid/uggrid.hh>
+#include <dune/grid/yaspgrid.hh>
 #include <dune/grid/utility/structuredgridfactory.hh>
 
 #include <dune/grid/io/file/gmshreader.hh>
@@ -57,7 +58,7 @@
 #  define WORLD_DIM 3
 #endif
 const int dim = WORLD_DIM;
-const int order = 1;
+const int order = 2;
 
 //differentiation method
 typedef adouble ValueType;
@@ -152,7 +153,7 @@ int main (int argc, char *argv[]) try
   // ///////////////////////////////////////
   //    Create the grid
   // ///////////////////////////////////////
-  typedef UGGrid<dim> GridType;
+  typedef YaspGrid<dim> GridType;
 
   std::shared_ptr<GridType> grid;