redefined test data dir and completed unittests for tools module

source/python/_config.py

source/python/classes/ControlFile.py

source/python/classes/EcFlexpart.py

source/python/mods/get_mars_data.py

source/python/mods/tools.py

source/python/submit.py

source/pythontest/TestTools.py

source/pythontest/_config_test.py

source/pythontest/conftest.py

source/pythontest/pytest.ini

test/Controls/CONTROL.req.test

test/Controls/CONTROL.test

test/Controls/CONTROL.worktest

test/Data/CONTROL.temp

test/Data/ECMWF_ENV

test/Data/compilejob.test

test/Data/convert.nl.test

test/Data/job.temp.test

test/Dir/FCOG__ML.20160410.40429.16424.grb

test/Dir/FCOG__SL.20160410.40429.16424.grb