New round of updates ready for testing / broader feedback

Hey everyone - now has another round of changes lined up for an upcoming release! Feedback is welcome, as always. :slight_smile:

  • Refactor filters and move most to modal dialog by default
  • Add pie chart showing top 10 countries by stall count
  • Exclude Permanently Closed markers from the map by default
  • Add transient zoom level indicator and several new base map layer options
  • Improve marker overlay order on map
  • Various minor bug fixes