added 260907 version of worker toolkit

worker-toolkit-flaredown/repo/frontend/app/mixins/postable-getable.js

@@ -0,0 +1,18 @@
+import Ember from 'ember';
+
+const {
+  get,
+  Mixin,
+  getProperties,
+} = Ember;
+
+export default Mixin.create({
+  getPostables(page) {
+    return get(this, 'store').query('postable', { page }).then(postables => {
+      const fakePostable = get(postables, 'firstObject');
+      const { posts, comments } = getProperties(fakePostable, 'posts', 'comments');
+
+      return posts.toArray().concat(comments.toArray());
+    });
+  },
+});