Increase file size limit for tracks, configurable

(abrensch/brouter#295)

config.template.js

@@ -129,4 +129,7 @@
     BR.conf.tracknameAllowedChars = 'a-zA-Z0-9 \\._\\-';
 
     BR.conf.overpassBaseUrl = 'https://overpass.kumi.systems/api/interpreter';
+
+    // File size limit in kb for loading tracks
+    BR.conf.trackSizeLimit = 1024 * 10;
 })();

js/plugin/TracksLoader.js

@@ -13,7 +13,7 @@ BR.tracksLoader = function (map, layersControl, routing, pois) {
             layerOptions: BR.Track.getGeoJsonOptions(layersControl),
             addToMap: false,
             // File size limit in kb (default: 1024) ?
-            fileSizeLimit: 1024,
+            fileSizeLimit: BR.conf.trackSizeLimit || 1024 * 10,
             shortcut: {
                 open: 79, // char code for 'o'
             },