Exposed "Search Settings..." string to translations.

templates/admin/settings/settings.html

@@ -16,7 +16,7 @@
       <h4>{% trans %}Search Settings{% endtrans %}</h4>
       <form action="{% url 'admin_settings_search' %}" class="form-inline" method="post">
         <input type="hidden" name="{{ csrf_id }}" value="{{ csrf_token }}">
-        {{ form_theme.input_text(search_form.fields.search_text, width=2, attrs={'placeholder': _('Search Settings...')}) }}
+        {{ form_theme.input_text(search_form.fields.search_text, width=2, attrs={'placeholder': lang_search_settings()}) }}
         <button type="submit" class="btn btn-primary"><i class="icon-search icon-white"></i></button>
       </form>
       <h4>{% trans%}Settings Groups{% endtrans %}</h4>{% for group in groups %}
@@ -39,3 +39,6 @@
   {% endblock %}</div>
 </div>
 {% endblock %}
+
+{# Language strings macros #}
+{% macro lang_search_settings() -%}{% trans %}Search Settings...{% endtrans %}{%- endmacro %}