fix geomapcontext when nDim!=nRealDim and nOrder > 1
fix nonlinear solver use with geomap inverse :
 - the type of snes (trust regin) must be implement directly in code (not option)
fix test_operatorinterpolation + remove test_element_serialize and test_interp_twomesh in // (because lot of work to fix that)
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop