Refactor authentication system (#2602)

Make auth configuration available via UI, remove FOSUserBundle and SAML-Bundle dependency

templates/security/password-reset/reset.html.twig

@@ -0,0 +1,16 @@
+{% extends 'security/password-reset/layout.html.twig' %}
+
+{% block login_form %}
+
+    {{ form_start(form, { 'action': path('fos_user_resetting_reset', {'token': token}), 'attr': { 'class': 'fos_user_resetting_reset' } }) }}
+    {{ form_widget(form) }}
+
+    <div class="row">
+        <div class="col-xs-12">
+            <button type="submit" class="btn btn-primary btn-block btn-flat">{{ 'Reset your password'|trans({}, 'AdminLTEBundle') }}</button>
+        </div>
+    </div>
+    
+    {{ form_end(form) }}
+
+{% endblock %}