Merge branch 'feature/fix-splinecommon_.hh' into 'master'

[splinecommon_] Wrong index variable and other fixes

See merge request !2897
6 jobs for master in 0 seconds (queued for 18 minutes and 26 seconds)
Status Name Job ID Coverage
  Trigger
passed full-dune-latest-release-clang

passed full-dune-latest-release-gcc

passed full-dune-master-clang

passed full-dune-master-gcc

passed minimal-dune-latest-release-gcc

 
  Downstream Modules
passed trigger lecture