195 - partially implemented http downloader
Merge branch 'develop' of https://github.com/UnifiedViews/Core into develop
Bugfixes
177 data unit saved in RDF store (hotfix)
Lowering strict one-thread access to data unit
Merge branch 'feature/177fixing_rdf_save' into develop
Fixed #64
Fixed problem with duplicit DPU jar record in exported zip file