Make CHOLDMOD-solver the new default & adjust ParameterFiles

dune/microstructure/CorrectorComputer.hh

...iment/macro-problem/Rumpf-Experiments/diagonal-trusses.py

experiment/macro-problem/Rumpf-Experiments/twisted-valley.py

.../macro-problem/buckling_experiment/buckling_experiment.py

...ro-problem/buckling_experiment/buckling_experiment_Top.py

...em/buckling_experiment/buckling_experiment_xAlignedLow.py

...em/buckling_experiment/buckling_experiment_xAlignedTop.py

...riment/macro-problem/self-folding-box/self-folding-box.py

experiment/micro-problem/buckling_microproblem.py

experiment/micro-problem/material_orthotropic.py

experiment/micro-problem/parametrized_laminate.py

experiment/micro-problem/prestrainedFibre.py

experiment/micro-problem/prestrainedFibre_anisotropicB.py

experiment/micro-problem/prestrainedFibre_anisotropicQ.py

experiment/micro-problem/three-phase-composite.py