[Core] Bring in core bundle from sandbox

Bring in bundle platform/core from the sandbox
branch, in preparation for clean up, tests, and
integration. WTD-573

platform/core/src/models/PersistedModelProvider.js

@@ -0,0 +1,36 @@
+/*global define,Promise*/
+
+/**
+ * Module defining PersistedModelProvider. Created by vwoeltje on 11/12/14.
+ */
+define(
+    [],
+    function () {
+        "use strict";
+
+        /**
+         *
+         * @constructor
+         */
+        function PersistedModelProvider(persistenceService, $q, SPACE) {
+            function promiseModels(ids) {
+                return $q.all(ids.map(function (id) {
+                    return persistenceService.readObject(SPACE, id);
+                })).then(function (models) {
+                    var result = {};
+                    ids.forEach(function (id, index) {
+                        result[id] = models[index];
+                    });
+                    return result;
+                });
+            }
+
+            return {
+                getModels: promiseModels
+            };
+        }
+
+
+        return PersistedModelProvider;
+    }
+);