Add some TODO's, refactor some code.

app/Factory/CategoryFactory.php

@@ -58,6 +58,9 @@ class CategoryFactory
         $result = null;
         /** @var Collection $collection */
         $collection = $this->user->categories()->get();
+
+        // TODO no longer need to loop like this
+
         /** @var Category $category */
         foreach ($collection as $category) {
             if ($category->name === $name) {