Merge branch 'fix/dumux-release3.7' into 'master'

dumux/common/timemanager.hh

dumux/porousmediumflow/sequential/gridadapt.hh

dumux/porousmediumflow/sequential/pressureproperties.hh

lecture/common/co2tablesbenchmark3.hh

lecture/efm/1p2c_2p_2p2c/lens1p2cexercise3.cc

lecture/efm/1p2c_2p_2p2c/lens2p2cexercise3.cc

lecture/efm/1p2c_2p_2p2c/lens2pexercise3.cc

lecture/efm/1p2cvs2p/lens1p2cexercise1.cc

lecture/efm/1p2cvs2p/lens2pexercise1.cc

lecture/efm/2p/lens2pexercise2.cc

lecture/mm/co2plume/co2plumeshapeexercise.cc

lecture/mm/co2plume/co2plumeshapeproperties.hh

lecture/mm/columnxylene/columnxyleneexercise.cc

lecture/mm/convectivemixing/convmixexercise.cc

lecture/mm/convectivemixing/convmixproblem.hh

lecture/mm/convectivemixing/convmixproperties.hh

lecture/mm/fractures/fractures.cc

lecture/mm/fuelcell/fuelcell.cc

lecture/mm/heatpipe/heatpipe.cc

lecture/mm/heavyoil/sagd/sagd.cc