updated VTD dependency
update dli-domain to the new data model of relations
moved model classes from dnet-dli
fixed bug
updated log properties and first implementation of dnet-domain added
created a new module dnet-dli-domain
common model moved in dnet-graph-domain
fixed pom
migrated from dnet-openaire-domain
removed java 1.7 constraints
fixed dependencies
tests, added openaire profiles
first porting