Code cleanup part #1: move all the services and directive JS code in the app.js file into its own files

static/js/directives/match.js

@@ -0,0 +1,16 @@
+/**
+ * Adds a 'match' attribute that ensures that a form field's value matches another field's
+ * value.
+ */
+angular.module('quay').directive('match', function($parse) {
+  return {
+    require: 'ngModel',
+    link: function(scope, elem, attrs, ctrl) {
+      scope.$watch(function() {
+        return $parse(attrs.match)(scope) === ctrl.$modelValue;
+      }, function(currentValue) {
+        ctrl.$setValidity('mismatch', currentValue);
+      });
+    }
+  };
+});