Disable parallel dataset upload requests for now (#5055)
Disable parallel dataset upload requests for now (#5055)

* Disable parallel dataset upload requests for now
* Update frontend/javascripts/admin/admin_rest_api.js

Co-authored-by: Philipp Otto <d6a330e0028e11926ca266e6abd80c349ed7920f@users.noreply.github.com>

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