tuplemapper + adaptive leaf grid, try fix fempy compilation error

fem-py: using the tuple-space together with the adaptiveLeafGridView leads to compilation errors as tuplespace.hh only has a forward declaration of the class template AdaptationMethod but does not include adaptationmanager.hh to get hold of the actual definition of the template.

Question is: is this the correct place to include adaptationmanager.hh? The tuplemapper.hh is included from tuplespace.hh which is included from autogenerated C++ code generated by fempy, so it should in principled not matter ...