switch back to 2d for the time being

[[Imported from SVN: r8241]]

harmonicmaps-eoc.cc

@@ -34,7 +34,7 @@
 #include <dune/gfe/geodesicfefunctionadaptor.hh>
 
 // grid dimension
-const int dim = 3;
+const int dim = 2;
 
 typedef UnitVector<double,3> TargetSpace;
 typedef std::vector<TargetSpace> SolutionType;