Need to do:
- Setting: Turn on/off sensor=true when map is embedded
- All placemarks: Show location names instead of slugs (link to just those like a real taxonomy)
- Settings: Allow option to set default gps lat lng and zoom for admin map

Done:
2013-11-16 Bug fix: Comments borked on pages with shortcode embed
2013-11-07 Embedded map: Add "edit" link to markers displayed on map when user is logged in for quick editing!
2013-11-07 Bug fix: Only enqueue js on placemark admin pages
2013-10-03 Settings: Allow locations in locations (via JSON)
2013-10-01 Shortcode: set defaults for gps and zoom