Move to Symfony Flex

The structure changed completely.
Bundles are gone. Everything is flatten in the folder `src`.
I separated import & api controllers to avoid _pollution_ in the main controller folder.

templates/Resetting/passwordAlreadyRequested.html.twig

@@ -0,0 +1,11 @@
+{% extends "@FOSUser/layout.html.twig" %}
+
+{% trans_default_domain 'FOSUserBundle' %}
+
+{% block fos_user_content %}
+<div class="card-content">
+    <div class="row">
+        {{ 'resetting.password_already_requested'|trans }}
+    </div>
+</div>
+{% endblock fos_user_content %}