Improve display of feedback authors (names & URLs)
Improve display of feedback authors (names & URLs)

This takes advantage of our custom 'metadata' block and tries to
retrieve proper names, including for guest users.

OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree