Sort items in the datahub (#815)

* sorting datahub

* not sorting groups first

* case insensitive compares

Author: jeremygnoonan

src/Controller/ConfigController.php

@@ -115,10 +115,18 @@ public function listAction(Request $request): JsonResponse
             }
         }
 
-        foreach ($groups as $group) {
-            $tree[] = $group;
+        $sortFunc = fn($a, $b)  =>  strtolower($a['text']) <=> strtolower($b['text']);
+
+        //sort group children
+        foreach($groups as &$group){
+            usort($group['children'], $sortFunc);
         }
 
+        //sort items
+        $tree = array_merge($tree, $groups);
+
+        usort($tree, $sortFunc);
+
         return $this->json($tree);
     }