Pde know your dofs

[TTitscher]

I had a bug in my custom examples regarding multiple dof types in combination with integrands that do not have all of them. This causes invalid reads during assemby:

Gradient damage has two dof types, d and eeq. NeumannBc has only d. We previously try to access NeumannBc::Gradient[eeq]. This is now solved by asking the gradient what his dof types are and assembe an intersection of those and the required ones.

So I added std::vector<DofTypes> DofMatrix/Vector::.DofTypes() and fixed the assembler. Now things got a bit out of control. Some reasoning:

• To test that, I added a proper integration test. With a complex geometry, displacement and force BCs, visualization, adaptive solve, ...
• That required a mesh. (1100 LOC in the diff...)
• And it required voronoi geometries for high order triangles. As I had them available in my custom stuff, I added them as well.
• Vornoi is now based on the integration type and I needed to link IntegrationTypeBase.cpp that basically only contained Info... --> gone now.
• During a routinely check in valgrind, I realized
  • leaks in visualize and my custom subclasses of LocalIsotropicDamage and GradientDamage (missing virtual dtor)
  • memory access violations in Legendre (access vector[i - 2] for i = 1)

[codecov[bot]]

Codecov Report

Merging #209 into PDE_reviewed will increase coverage by 0.89%. The diff coverage is 100%.

@@               Coverage Diff                @@
##           PDE_reviewed     #209      +/-   ##
================================================
+ Coverage         67.23%   68.13%   +0.89%     
================================================
  Files               316      315       -1     
  Lines             12131    12241     +110     
================================================
+ Hits               8156     8340     +184     
+ Misses             3975     3901      -74

Impacted Files	Coverage Δ
...s/integrationtypes/IntegrationType2D3NGauss3Ip.cpp	0% <ø> (ø)	:arrow_up:
...ics/integrationtypes/IntegrationType2D3NGauss3Ip.h	0% <ø> (ø)	:arrow_up:
src/visualize/PostProcess.h	100% <ø> (ø)	:arrow_up:
...c/mechanics/integrationtypes/IntegrationTypeBase.h	100% <ø> (ø)	:arrow_up:
src/mechanics/dofs/DofVector.h	100% <100%> (ø)	:arrow_up:
src/visualize/VoronoiGeometries.cpp	97.65% <100%> (+16.47%)	:arrow_up:
src/visualize/HandlerInterface.h	100% <100%> (ø)	:arrow_up:
test/mechanics/dofs/DofVector.cpp	100% <100%> (ø)	:arrow_up:
src/visualize/PostProcess.cpp	92.5% <100%> (+0.29%)	:arrow_up:
src/mechanics/dofs/DofMatrixContainer.h	100% <100%> (ø)	:arrow_up:
... and 12 more

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