Ref #3442 Fixes #3470: make obvious dependency to default wf impl
Fixes #3472: allows to dl archives as zip
Merge pull request #171 from fanf/bug_3472/dev/can_not_dl_archives_as_zip

Fixes #3472: allows to dl archives as zip
Merge pull request #170 from fanf/ust_3442/dev/3470_make_workflowService_dependency_more_visible

Ref #3442 Fixes #3470: make obvious dependency to default wf impl
Fixes #3443 : Add workflow for Node groups