Changed C++ version in Makefiles from 11 to 14 to avoid compilation error after recent changes to map_vector_sparse.hpp.

Deleted lines related to Gauss smoothing. The way the Gauss smoothing was done created problems, because the weights were not adding up to exactly 1 but had a round off error. Also Gauss smoothing is not really needed prior to the redistancing.

Deleted lines related to Gauss smoothing. The way the Gauss smoothing was done created problems, because the weights were not adding up to exactly 1 but had a round off error. Also Gauss smoothing is not really needed prior to the redistancing.