cleanup duplicate translation ids (#3001)

templates/user/layout.html.twig

@@ -2,7 +2,7 @@
 {% import "user/actions.html.twig" as actions %}
 {% import "macros/widgets.html.twig" as widgets %}
 
-{% block page_title %}{{ 'admin_user.title'|trans }}{% endblock %}
+{% block page_title %}{{ 'users'|trans }}{% endblock %}
 {% block page_actions %}{{ actions.user(user, tab) }}{% endblock %}
 
 {% block main %}