Calendar - links to public event listings from edit page for published events

Once you publish an event, there isn't a way to jump from the private edit page to the public listing. Being able to see it on the public calendar would help you get the URL and copy it, confirm the listing looks right, etc. (There is a "preview" function on the edit form but currently a few things about it are different than the real listing.)

This would likely be simple enough for single occurrence events. For events with multiple occurrences it would be a little trickier, especially if you add or change occurrences. (New occurrences won't have a public link yet until you save the form.) Related, multi-occurrence events don't have a single public link which shows all occurrences. If such a thing existed we could possibly use it here. (Perhaps it could implemented via a general search API which allows searching by specific fields, using something like ?calevent_id=99999; see also #335.)

Start with the edit page's existing preview function and the public event listing, comparing how single- and multi-occurrence events are represented. Read the discussion in #335 for the proposed search API direction. Done means published events have a usable public link from the edit page, with behavior defined for newly changed or multiple occurrences.