Allow overriding base_form template controls

gas/templates/gas/base_form.html

@@ -16,6 +16,7 @@
         {% endblock %}
 
         <ul class="actions">
+        {% block actions %}
             {% if not is_popup %}
                 <li><a href="{{ view.get_success_url }}">{% trans "Cancel" %}</a></li>
             {% endif %}
@@ -26,6 +27,7 @@
                 <li><button name="save_and_continue" type="submit">{% trans "Save and continue" %}</button>
             {% endif %}
             {% block extra_actions %}{% endblock %}
+        {% endblock actions %}
         </ul>
     </form>
 {% endblock %}

gas/views.py

@@ -168,7 +168,7 @@ class GASUpdateView(GASMixin, UpdateView):
 class GASDeleteView(GASMixin, DeleteView):
     template_name = "gas/delete_confirmation.html"
     confirmation_text = _("Are your sure you want to delete {object}?")
-    deleted_text = _("%(obj)s deleted.")
+    deleted_text = _("{object} deleted.")
 
     def get_confirmation_text(self):
         return self.confirmation_text.format(object=self.object)