oscar template: add directory in which are messages stored

searx/templates/oscar/base.html

     {% endblock %}
     {% block site_alert_warning_nojs %}
     <noscript>
-        <div class="alert alert-warning" role="alert">
-            <strong>{{ _('Warning!') }}</strong>
-            {{ _('Please enable JavaScript to use full functionality of this site.') }}
-        </div>
+        {% include 'oscar/messages/js_disabled.html' %}
     </noscript>
     {% endblock %}
+    {% block site_alert_info %}
+    {% endblock %}
+    {% block site_alert_success %}
+    {% endblock %}
     
     {% block content %}
     {% endblock %}

searx/templates/oscar/messages/js_disabled.html

+<div class="alert alert-warning" role="alert">
+    <strong>{{ _('Warning!') }}</strong>
+    {{ _('Please enable JavaScript to use full functionality of this site.') }}
+</div>

searx/templates/oscar/messages/save_settings_successfull.html

+<div class="alert alert-success fade in" role="alert">
+    <button class="close" data-dismiss="alert" type="button">
+        <span aria-hidden="true">×</span>
+        <span class="sr-only">Close</span>
+    </button>
+    <strong>{{ _('Well done!') }}</strong>
+    {{ _('Settings saved successfully.') }}
+</div>

searx/templates/oscar/messages/unknow_error.html

+<div class="alert alert-danger fade in" role="alert">
+    <button class="close" data-dismiss="alert" type="button">
+        <span aria-hidden="true">×</span>
+        <span class="sr-only">Close</span>
+    </button>
+    <strong>{{ _('Oh snap!') }}</strong>
+    {{ _('Something went wrong.') }}
+</div>