Switch avatars to be built out of CSS and only overlayed with the gravatar when a non-default exists

static/js/directives/ui/anchor.js

@@ -0,0 +1,19 @@
+/**
+ * An element which displays its contents wrapped in an <a> tag, but only if the href is not null.
+ */
+angular.module('quay').directive('anchor', function () {
+  var directiveDefinitionObject = {
+    priority: 0,
+    templateUrl: '/static/directives/anchor.html',
+    replace: false,
+    transclude: true,
+    restrict: 'C',
+    scope: {
+      'href': '@href',
+      'isOnlyText': '=isOnlyText'
+    },
+    controller: function($scope, $element) {
+    }
+  };
+  return directiveDefinitionObject;
+});