NAWQAAN-207

With NAWQAAN-234 bonus
There need to be three handlers set for changes to the filter selection.  One for the sites list, which is handled in the onready for the page.  One for the main map sitesLayer, which has to take place when this layer is in scope (or I could reach in and grab it, but I want separation of concern here).  And the last is in the inset for the same reason as the main map.  It might be more clear if I set up an event and then listened for it, but this was my quick and easy way.