'coupling' not needed anymore, use global containers instead!

dune/fem-dg/algorithm/createsubalgorithms.hh

dune/fem-dg/algorithm/evolution.hh

dune/fem-dg/algorithm/steadystate.hh

dune/fem-dg/examples/advdiff/algorithmcreator.hh

dune/fem-dg/examples/dataio/algorithmcreator.hh

dune/fem-dg/examples/euler/algorithmcreator.hh

dune/fem-dg/examples/incompnavierstokes/algorithmcreator.hh

...xamples/incompnavierstokes/incompnavierstokesalgorithm.hh

dune/fem-dg/examples/navierstokes/algorithmcreator.hh

dune/fem-dg/examples/poisson/algorithmcreator.hh

dune/fem-dg/examples/stokes/algorithmcreator.hh

dune/fem-dg/misc/simulator.hh