fix sources being invisible in the editor

src/c3nav/editor/static/editor/css/editor.css

@@ -170,6 +170,9 @@ form button.invisiblesubmit {
 }
 
 /* Styles inside leaflet */
+.leaflet-map-pane svg {
+    z-index: auto;
+}
 .leaflet-control-layers-overlays label {
     margin-bottom:0;
 }

src/c3nav/editor/static/editor/js/editor.js

@@ -51,7 +51,7 @@ editor = {
     sources: {},
     get_sources: function () {
         // load sources
-        editor._sources_control = L.control.layers([], [], {autoZIndex: true});
+        editor._sources_control = L.control.layers([], [], { autoZIndex: false });
 
         $.getJSON('/api/sources/', function (sources) {
             var source;