Cosserat-Continuum-Nonplanar

@osander: Can you have a look here?

This MR cleans up the usage of MIXED_SPACE in cosserat-continuum.

Now all combinations of dim = dimworld or dim != dimworld and MIXED_SPACE = 0 or MIXED_SPACE = 1 at least compile.

Also, this MR points out the one combination that still can't be solved: Problems with dim != dimworld do not work for MIXED_SPACE = 1!

As soon as I need this for locking tests I will add this; I will have to change Nonplanarcosseratshellenergy so it can be assembled with the GFEMixedAssembler.

dune/gfe/nonplanarcosseratshellenergy.hh

@@ -9,6 +9,8 @@
 
 #include <dune/fufem/boundarypatch.hh>
 
+#include <dune/functions/gridfunctions/discreteglobalbasisfunction.hh>
+
 #include <dune/gfe/localenergy.hh>
 #include <dune/gfe/localgeodesicfefunction.hh>
 #include <dune/gfe/rigidbodymotion.hh>
@@ -16,13 +18,9 @@
 #include <dune/gfe/tensor3.hh>
 #include <dune/gfe/localprojectedfefunction.hh>
 
-#include <dune/functions/gridfunctions/discreteglobalbasisfunction.hh>
-
 #if HAVE_DUNE_CURVEDGEOMETRY
 #include <dune/curvedgeometry/curvedgeometry.hh>
 #include <dune/localfunctions/lagrange/lfecache.hh>
-#include <dune/curvedgrid/geometries/cylinder.hh>
-#include <dune/curvedgrid/gridfunctions/analyticdiscretefunction.hh>
 #endif
 
 template<class Basis, int dim, class field_type=double, class GridFunction =