new style of docstring params and updates in docstrings

source/python/_config.py

source/python/classes/ControlFile.py

source/python/classes/EcFlexpart.py

source/python/classes/MarsRetrieval.py

source/python/classes/UioFiles.py

source/python/install.py

source/python/mods/checks.py

source/python/mods/disaggregation.py

source/python/mods/get_mars_data.py

source/python/mods/prepare_flexpart.py

source/python/mods/tools.py

source/python/submit.py