Simplify block override

{% extends "base.html" %}

{% block extrahead %}

  {% set title = config.site_name %}

  {% if page and page.meta and page.meta.title %}

    {% set title = title ~ " - " ~ page.meta.title %}

  {% elif page and page.title and not page.is_homepage %}

    {% set title = title ~ " - " ~ page.title %}

  {% endif %}

  {{ super() }}

  <script defer src="https://sdg-analytics.etsi.org/script.js" data-website-id="20b40a05-331a-41be-a3b9-7e776dbafde8"></script>

{% endblock %}

 No newline at end of file