issue with the interpolate method on the LagrangeSpace (based on
dune-localfunction) when used with dimRange>1

get the LFESpaces to work correctly with dimR>1
- still need to make sure RT,BDM, etc are doing he right thing
- prolongation and restriction is not yet working (error in dof manager)

remove some debug output

fix an issue with the correct 'block index' in the lfe space. Now RT seems
to work fine again