* Public-facing Map page now supports PlaceCategory: lists the categories, submits the list of checkboxes to ajax_map_points() etc. This meant changes to map.js and map.phtml, some CSS for the markers, and the ajax_map_points() method inside site.php

* Public Map page no longer uses icons that are colored per data source; one color for all icons, and set in CSS. This removed the need for the ColoredDivIcon class.

* PlaceCategory now suopports _on_by_default_ much as data sources do, allowing them to be checked by default when the Map page loads.