TASK4869068: Render fetched maps into the "map" div

Fetched maps were being erroneously rendered into the #request-onsite div which also holds the div for Take-out info. As a result, the takeout stuff was being clobbered, and selectors against #request-onsite-map and #request-onsite-takeout were silently failing (thanks jQuery) when we attempted to toggle their visibility, leading to stale data being visible.