This work has been partially supported by the following European projects: DILIGENT (FP6-2003-IST-2),   
D4Science (FP7-INFRA-2007-1.2.2), D4Science-II (FP7-INFRA-2008-1.2.2), iMarine (FP7-INFRASTRUCTURES-2011-2),   
and EUBrazilOpenBio (FP7-ICT-2011-EU-Brazil), Parthenos (H2020-INFRADEV-1-2014-1), BlueBridge (H2020-EINFRA-2015-1).  