bulma (call): update template to integrate call features: previously, call template was a minimum UI for testing implementation. This commit introduce a usable UI with search interface, mute and full screen button, animations, and other UI/UX improvments. rel 423

{% extends 'error/base.html' %}

{% block body %}
<h1>{% trans %}Unauthorized{% endtrans %}</h1>
<p>{% trans %}Sorry, you are not authorized to access this page. An authentication is needed.{% endtrans %}</p>
{% endblock body %}