dune-fempy not needed anymore (generator code still needs to be removed)
Can eiter use dune.fem.function.gridFunction decorator or need to wrap with
dune.ufl.GridFunction to get ufl support for dune-python grid functions

two bug fixes caused by earlier changes

commented out some code that is likely not going to be needed anymore
and also fixed a bug caused by earlier changes

minor fixes

add lf.bind(e)/lf.unbind() on the python side

get the grid functions to final work - a bit more testing of different cases still needed

remove old cppFunction

In GeometryGrid change from gf.localFunction to ConstLocalFunction otherwise
some newer gridfunction can't be used

adapt to changes in the reference element construction in dune-geometry

[cleanup] Remove unwanted changes.

bug fix