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This feature is being developed (primarily?) by UW-Madison for use in the redesigned UW-Madison portal.

Favorites is a different way of interacting with layout.

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Edit controller checks if signaled nodeId is deletable.  Adds errorMessage render parameter if needed.  Adds successMessage render parameter if success.

Who's interested in adopting / working on this?

Tentatively interested parties: the Wisconsin crew (Unlicensed user, Unlicensed user, Unlicensed user, Unlicensed user), Unlicensed user / Oakland, Unlicensed user / Manchester;