Added code for leaflet geolocation map

mediagoblin/static/js/extlib/leaflet

@@ -0,0 +1 @@
+../../../../extlib/leaflet/dist/

mediagoblin/static/js/geolocation-map.js

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+$(document).ready(function () {
+    var longitude = Number(
+	$('#tile-map #gps-longitude').val());
+    var latitude = Number(
+	$('#tile-map #gps-latitude').val());
+
+    console.log(longitude, latitude);
+
+    var map = new L.Map('tile-map');
+
+    var mqtileUrl = 'http://otile{s}.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.jpg';
+    var mqtileAttrib = 'Map data © '
+	+ String(new Date().getFullYear())
+	+ ' OpenStreetMap contributors, CC-BY-SA.'
+	+ ' Imaging © '
+	+ String(new Date().getFullYear())
+	+ ' <a target="_blank" href="http://mapquest.com">MapQuest</a>.';
+    var mqtile = new L.TileLayer(
+	mqtileUrl,
+	{maxZoom: 18,
+	 attribution: mqtileAttrib,
+	 subdomains: '1234'});
+
+    var location = new L.LatLng(latitude, longitude); // geographical point (longitude and latitude)
+    map.setView(location, 13).addLayer(mqtile);
+
+    var marker = new L.Marker(location);
+    map.addLayer(marker);
+});