fix(archive): Fixed fetching all items on every change.
Merge remote-tracking branch 'nikola/devel' into devel
feat(ingest): test version of package preview added.

SD-429
Cleaned package preview code.
feat(ingest): merge functionality and view for package-preview on right pane
feat(ingest): add loading and error status for package content
fix(ingest): improve right pane package preview
fix(upload): When uploading an audio/video content upload modal trying to display it as a picture

SD-436