Address comment and nit

src/css/toolbox-layers-list.css

@@ -71,6 +71,7 @@
   flex: 1 auto;
   white-space: nowrap;
 }
+
 .layer-item .layer-name.overflowing-name {
   overflow: hidden;
   text-overflow: ellipsis;

src/js/controller/LayersListController.js

@@ -102,7 +102,7 @@
     if (layerItem.offsetWidth < layerItem.scrollWidth) {
       $(layerItem).find('.layer-name')
         .addClass('overflowing-name')
-        .attr('title', pskl.utils.TooltipFormatter.format(layer.getName()))
+        .attr('title', layer.getName())
         .tooltip();
     }
   };