MAgPIE coupling: removed s56_ghgprice_start from coupling script, since the start year of the CO2 price is solely defined by the data transfered from REMIND. The parameter was once introduced to define the beginning of the CO2 price phase-in in MAgPIE. Since the phase-in is now done in REMIND and no longer in MAgPIE, the parameter is no longer needed in the coupling.

Refactoring start scripts: adapt coupling scripts, call SLURM directly without the detour via cmd files

Refactoring start scripts: adapt coupling scripts (get rid of *.cmd files by creating the SLURM command on the fly)

Refactoring - delete realization linadjust of module 45_carbonprice, general code cleaning (mainly start_functions.R)