Revert "Provide uids instead of relative_url/path for catalog lookups."

This reverts commit 3f8b6a39f924d14e319bc6b141ab6f1547910748.
Also revert "fix a typo. potral -> portal."
(commit fa7113c9bcae55bb51778573096af5d274d9d54b)

*_path parameters are preferred at SimulationTool level over UIDs, and
may not work as intended.