Fix broken page title for range dashboard

oscar/templates/oscar/dashboard/ranges/range_product_list.html

 {% load i18n %}
 
 {% block title %}
-{% blocktrans %}Products in range '{{ range.name }}'{% endblocktrans %} | {{ block.super }}
+{% blocktrans with name=range.name %}Products in range '{{ name }}'{% endblocktrans %} | {{ block.super }}
 {% endblock %}
 
 {% block breadcrumbs %}