bulma (call): redesign of call box: - hang up button has be moved next to other action buttons, and is now just an icon with no text, this save room and is coherent with usual A/V calls UIs - actions buttons (mute, desktop sharing, camera switching, hang up) and local video have been redesign to avoid overlapping on small screen. Local video is now a little higher. - remore video border has been suppressed

{% macro form(action='', class='') %}
<form method="post" action="{{action}}" {{ {'class': class}|xmlattr }} {{kwargs|xmlattr}} >
    {% if csrf_token is defined %}
        <input type="hidden" name="csrf_token" value="{{csrf_token}}">
    {% endif %}
    {{ caller() }}
</form>
{% endmacro %}