fix(Markers): fix marker icon broken with latest Leaflet version (1.0)

Leaflet now tries to auto-detect the path for the icons, but when using a base64 one, it breaks.
Thus, we need to force the imagePath to be ' '.
See this line in Leaflet source: https://github.com/Leaflet/Leaflet/blob/master/src/layer/marker/Icon.Default.js#L36

Author: Valentin Hervieu

dist/ui-leaflet.js

@@ -1,5 +1,5 @@
 /*!
-*  ui-leaflet 1.0.0 2016-09-27
+*  ui-leaflet 1.0.0 2016-09-28
 *  ui-leaflet - An AngularJS directive to easily interact with Leaflet maps
 *  git: https://github.com/angular-ui/ui-leaflet
 */
@@ -2093,6 +2093,7 @@ angular.module('ui-leaflet').service('leafletMarkersHelpers', ["$rootScope", "$t
             return new L.Icon.Default({
                 iconUrl: base64icon,
                 shadowUrl: base64shadow,
+                imagePath: ' ',
                 iconSize: [25, 41],
                 iconAnchor: [12, 41],
                 popupAnchor: [1, -34],
@@ -4252,12 +4253,12 @@ angular.module('ui-leaflet').directive('markers', ["leafletLogger", "$rootScope"
                         var pass = _maybeAddMarkerToLayer(layerName, layers, model, marker, watchOptions.individual.type, map);
                         if (!pass) return; //something went wrong move on in the loop
                     } else if (!isDefined(model.group)) {
-                        // We do not have a layer attr, so the marker goes to the map layer
-                        map.addLayer(marker);
-                        if (watchOptions.individual.type === null && model.focus === true) {
-                            marker.openPopup();
+                            // We do not have a layer attr, so the marker goes to the map layer
+                            map.addLayer(marker);
+                            if (watchOptions.individual.type === null && model.focus === true) {
+                                marker.openPopup();
+                            }
                         }
-                    }
 
                     if (watchOptions.individual.type !== null) {
                         addMarkerWatcher(marker, pathToMarker, leafletScope, layers, map, watchOptions.individual);
@@ -5067,7 +5068,7 @@ angular.module('ui-leaflet').factory('leafletMarkerEvents', ["$rootScope", "$q",
 
 'use strict';
 
-var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
+function _typeof(obj) { return obj && typeof Symbol !== "undefined" && obj.constructor === Symbol ? "symbol" : typeof obj; }
 
 angular.module('ui-leaflet').factory('leafletPathEvents', ["$rootScope", "$q", "leafletLogger", "leafletHelpers", "leafletLabelEvents", "leafletEventsHelpers", function ($rootScope, $q, leafletLogger, leafletHelpers, leafletLabelEvents, leafletEventsHelpers) {
     var isDefined = leafletHelpers.isDefined,

dist/ui-leaflet.min.js

@@ -98,6 +98,7 @@ angular.module('ui-leaflet').service('leafletMarkersHelpers', function ($rootSco
             return new L.Icon.Default({
                 iconUrl: base64icon,
                 shadowUrl: base64shadow,
+                imagePath: ' ',
                 iconSize: [25, 41],
                 iconAnchor: [12, 41],
                 popupAnchor: [1, -34],