Fixed #16577 -- Added a map_creation block in openlayers.js template

{% autoescape off %}{% for item in map_options.items %}      '{{ item.0 }}' : {{ item.1 }}{% if not forloop.last %},{% endif %}

{% endfor %}{% endautoescape %}    };{% endblock %}

    // The admin map for this geometry field.

    {% block map_creation %}

    {{ module }}.map = new OpenLayers.Map('{{ id }}_map', options);

    // Base Layer

    {{ module }}.layers.base = {% block base_layer %}new OpenLayers.Layer.WMS("{{ wms_name }}", "{{ wms_url }}", {layers: '{{ wms_layer }}'{{ wms_options|safe }}});{% endblock %}

    {{ module }}.map.addLayer({{ module }}.layers.base);

    {% endblock %}

    {% block extra_layers %}{% endblock %}

    {% if is_linestring %}OpenLayers.Feature.Vector.style["default"]["strokeWidth"] = 3; // Default too thin for linestrings. {% endif %}

    {{ module }}.layers.vector = new OpenLayers.Layer.Vector(" {{ field_name }}");

   .. attribute:: openlayers_url

   Link to the URL of the OpenLayers JavaScript.  Defaults to

   ``'http://openlayers.org/api/2.8/OpenLayers.js'``.

   ``'http://openlayers.org/api/2.11/OpenLayers.js'``.

   .. attribute:: modifiable