bug: simplexquadraturerules for ID tries to return rule for 2D :( fixed and i...

bug: simplexquadraturerules for ID tries to return rule for 2D :(  fixed and i think this may also fix the ID bug that oliver reported..??

[[Imported from SVN: r3532]]

quadrature/quadraturerules.hh

@@ -412,7 +412,7 @@ namespace Dune {
     }
 
     //! appear as your own container
-    const SimplexQuadratureRule<ct,2>& getelement (GeometryType type, int p)
+    const SimplexQuadratureRule<ct,dim>& getelement (GeometryType type, int p)
     {
       return *this;
     }