Revert commit a4b0a56d also for the source file, which got accidentally committed in commit c62c3ee0.

Revert commit a4b0a56d also for the header file, which should have been committed to the sea ice branch.

Rad complex optim

See merge request !2

Added the possibility to correct the DEM with HS at each time step for the meteo interpolation (e.g. for Winstral preferential deposition). This is achieved using the key ADD_HS_TO_DEM=TRUE in the input section

Removed key Terrain_Radiation in [EBalance]. It is redundant with --enable-eb and cause segfault is --enable-eb is provided and the variable is set to false.

Rad complex mpi

See merge request !1

Removed old view factor writing code. Moved view factor writing to Ebalance constructor and added a pure virtual view factor getter in TerrainRadiationAlgorithm

Moved all the solar panel part to complex, added interface to implement it in other modules. Still some cleaning needed in complex (move some parts to SolarPanel.cc), and a correct implementation for config keys and for output path is still required

Removed useless omp loop in the constructor, in order to be able to use push back on radfields vector and avoid dummy object contruction

Now solarAzimuth and solarElevation are passed as argument to terrain_radiation::getRadiation, so there is no need in Complex to store a pointer to radfields, so it is celaner. Note these two values are used only in complex