The multiplication by operator* between a ScaledIdentityMatrix
and a FieldMatrix only got introduced in Dune 2.9.  Therefore,
avoid it if we are building with earlier versions of Dune.

Fixes

See merge request !121

Add option to define deformation Dirichlet values for each direction separately in cosserat-continuum

Make GFE_ORDER and LFE_ORDER compiler macros and build the necessary combinations of cosserat-continuum-Xd-in-Xd

To build these combinations with the CI-system, install foamgrid for the tests with parmg, vtk, curvedgeometry and curvedgrid

This is needed to actually compare the 3D-model with the 2D-approximation

Correct the stopping criterion in the Riemannian-TR-Solver,...

See merge request !120

Deprecate the call to energy with a RigidBodyMotion in cosseratenergystiffness and in nonplanarcosseratenergystiffness - this is actually duplicate code!

They can't be removed yet because they are still used in tests though!

Correct the stopping criterion in the Riemannian-TR-Solver, Riemannian-PN-Solver and MixedRiemannian-TR-Solver

Do not stop if the correction gets small because the trust region radius gets small or the regularization parameter gets large

The modules dune-fufem and dune-matrix-vector
have been moved from the FU Berlin server to the server
operated by the Dune project when Carsten Gräser left
FU Berlin.

Correct the dimension of the rotation and the deformation in the...

See merge request !118

In particular:
* add flag "useAlternativeEnergyWCoss" to NonplanarCosseratShellEnergy
* if the flag set to true, the model from the paper "Alternative derivation of the higher-order constitudtive model for six-parameter elastic shells", equations (119) and (126) is used

Instead of loading the volume load as a fixed (x,y,z) vector, load it as a space-dependent Python function

Correct the dimension of the rotation and the deformation in the compositeBasis, it needs to be 3, independent of dim

Add missing ADOLC scalar mode in mixedlocalgfeadolcstiffness

See merge request !116

Fix build failure related to ProductManifold and std::cout

See merge request !114

In particular:
* Forward declaring ProductManifold in the `impl` namespace
  is not a good idea.
* Add missing headers

targetspacetest.cc is extended to test for the first issue.