{{ prefetch }}
{{ favico }}
{# Use the latest engine in ie8/ie9 or use google chrome engine if available #}
{# Improve usability in portal devices #}
{{ title_string }}
{{ css_file_to_string }}
{{ css_style_print }}
{{ js_file_to_string }}
{{ extra_headers }}
{% block header_end %}{% endblock header_end %}
{% block extraHead %}
{% endblock %}
{{ header_extra_content }}