[Forms] Date time controls

Implement date time controls up to the point that
they validate, and information (albeit not the right
information) propagates back up to the containing
form. WTD-530.

platform/forms/src/controllers/DateTimeController.js

@@ -0,0 +1,34 @@
+/*global define*/
+
+define(
+    [],
+    function () {
+
+        function DateTimeController($scope) {
+
+            function update() {
+                var date = $scope.datetime.date,
+                    hour = $scope.datetime.hour,
+                    min = $scope.datetime.min,
+                    sec = $scope.datetime.sec;
+
+                $scope.ngModel[$scope.field] = [
+                    date,
+                    hour,
+                    min,
+                    sec
+                ].join(".");
+            }
+
+            $scope.$watch("datetime.date", update);
+            $scope.$watch("datetime.hour", update);
+            $scope.$watch("datetime.min", update);
+            $scope.$watch("datetime.sec", update);
+
+            $scope.datetime = {};
+        }
+
+        return DateTimeController;
+
+    }
+);