icons for vault listing

src/app/directives/fallbackSrcDirective.js

@@ -0,0 +1,11 @@
+angular
+    .module('bit.directives')
+
+    .directive('fallbackSrc', function () {
+        return function (scope, element, attrs) {
+            var el = $(element);
+            el.bind('error', function (event) {
+                el.attr('src', attrs.fallbackSrc);
+            });
+        };
+    });