Enable testing on Heidelberg runner

See merge request dominic/dune-perftool!252

This will leave the coverage of the testing suite untouched!

Add an option to allow turning off vectorization of jacobians

See merge request dominic/dune-perftool!249

They are only to a lesser extent important for our HPC applications
and the vectorization algorithm struggles with the complexity of the
search space.

Fix nondeterministic quadrature position bug

Closes #110

See merge request dominic/dune-perftool!248

Fix performance bugs with the sumfact kernels in functions merge

See merge request dominic/dune-perftool!246

Improve logging of vectorization strategy

See merge request dominic/dune-perftool!245

Update sbatch file for donkey

See merge request dominic/dune-perftool!243

Feature/measure nonlinear jacobian apply

Closes #111 and #119

See merge request dominic/dune-perftool!244

It can be patched from within perftool and dune-opcounter
shouldnt be mandatory for every vectorized computation.

So far, we had the opcounter cast to Dune::FieldVector
of size 1. Now it defines the correct type.

Merge/blockstructured vectorization second try

See merge request dominic/dune-perftool!242

updates VTKSequenceWriter explicitly

See merge request dominic/dune-perftool!221