eccodes table changed, setting grib2 messes up variables, dirty fix

See merge request flexpart/flex_extract!4

modifications and adjustments to dates and times for correctly retrieving analysis and forecast data in operational mode

added option to provide event(ECMWF trigger events) information to CONTROL files and start the job in operational mode

created server specific templates for slurm job scripts (Reading vs Bologna)! Use static link file name in Python.