Remove the workaround for list without previously wanted map

[wbazant]

Follow-up from #543 (comment).

The list relies on the map being loaded in a few ways now:

• bounds of a last map view needed to fetch list location
• width and height for calculating new bounds in place search
• after searching, we move the map, which changes the lastMapView, and changes the URL

There is a workaround in place - if there's no map loaded but we're opening a list, e.g. after a refresh, load it it come back. It's not easy to remove it, but we can get the width and height the map would have, and repair a bunch of places. It could however move us to a better design, so worth keeping track of the idea!