streamline computation of scattering contributions

Joachim Wuttkerequested to merge
i410d into main
  • Device/ now independent of Element classes; computations moved to Sim/Contrib
  • *Computation::runProtected now a bare for loop, ready for further simplification
  • rm ParticleLayoutContribution; functionality for computing interparticle correlations moved to ReLayout
  • corrected cerfcx.h so that it can be included multiple times

Merge request reports