Show metadata on Web UI

Layer 1: show intrinsic and extrinsic metadata for artifact on web UI (design, implementation and deployment) Layer 2: add linked data capabilities (Semantic Web solutions)

design metadata view for Web UI
allow export of metadata (in multiple formats - APA/ BibTeX/ CodeMeta/ CFF)
assistance and contribution to CodeMeta

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Migrated from T4081 (view on Phabricator)