Update operators and draft for data redistribution between topologies

HySoP/hysop/domain/domain.py

HySoP/hysop/fields/continuous.py

HySoP/hysop/mpi/topology.py

HySoP/hysop/operator/advection.py

HySoP/hysop/operator/analytic.py

HySoP/hysop/operator/analytic_d.py

HySoP/hysop/operator/continuous.py

HySoP/hysop/operator/diffusion.py

HySoP/hysop/operator/discrete.py

HySoP/hysop/operator/multiphase.py

HySoP/hysop/operator/penalization.py

HySoP/hysop/operator/poisson.py

HySoP/hysop/operator/stretching.py

HySoP/hysop/operator/stretching_d.py

HySoP/hysop/operator/synchronizeGhosts.py