Improved the graph files so that they are compatible with the IOIPSL routines used to read them in the model.

Land points outside Hydrosheds (>60°S) + cleanup + solving res_lon/res_lat issue in ModelGrid when nbj or nbi = 1

Prepared Environment for IDRIS.

First version of the station data management software together with a sample file for the statin metadata. This is the first step to positioning the stations onto the HTUs generated by RoutingPreProc.py

Optimize the size of the hydro data box read for each domain. Reduces a little the computational time of weight calculation.

Optimized memory management. In nearly all cases the dimensions used for variables in routing_reg.f90 are now passed in argument.
This change has shown a bug in killbas which still needs to be solved.

Merge branch 'master' of gitlab.in2p3.fr:jan.polcher/routingpp