refactored functions in EcFlexpart and did some minor changes

run/control/CONTROL.req.test

run/control/CONTROL.temp

run/jobscripts/job.ksh

run/run.sh

source/python/classes/ControlFile.py

source/python/classes/EcFlexpart.py

source/python/classes/MarsRetrieval.py

source/python/classes/UioFiles.py

source/python/mods/get_mars_data.py

source/python/mods/prepare_flexpart.py

source/python/mods/tools.py