Make user filtering case-insensitive

src/ServicesProvider/ServicesProvider.php

@@ -43,6 +43,7 @@ class ServicesProvider
         $container->extend('classMapper', function ($classMapper, $c) {
             $classMapper->setClassMapping('activity_sprunje', 'UserFrosting\Sprinkle\UFTweaks\Sprunje\ActivitySprunje');
             $classMapper->setClassMapping('user', 'UserFrosting\Sprinkle\UFTweaks\Database\Models\User');
+            $classMapper->setClassMapping('user_sprunje', 'UserFrosting\Sprinkle\Organisations\Sprunje\UserSprunje');
 
             return $classMapper;
         });