Facilitate moving whole checkouts by using relative links
Switching https://git.geomar.de/data/tools/deploy_data/blob/master/deploy_data.sh#L42 to a relative link, may make us able to move the whole structure.
Switching https://git.geomar.de/data/tools/deploy_data/blob/master/deploy_data.sh#L42 to a relative link, may make us able to move the whole structure.