Forum: Major redesign of forums: Forums have been redesigned. They follow the new general design with 2 or 3 panels, allowing to have directly a forum if one is found/set up, and a panel on the left to search/discover other ones. Categories have been rewritten to be usable with pubsub relationships, a XEP-0277 type node is used for topics, and each item has a comments node for the threads. The thread view is set in `forum/show_messages.html` template. It has a header with a search box and a button to (un)subscribe. Items are displayed with the same macros as for the blog items. Below a room is set for editor, tags and attachments. rel 463

<div class="main_notification columns is-centered">
    <div class="column is-narrow has-items-centered">
        {% set level_map={
            'success': 'is-success',
            'info': 'is-info',
            'warning': 'is-warning',
            'error': 'is-danger'
            }
        %}

        <div class="notification {{level_map[level]}} py-4">
            {{message}}
            <button class="button is-rounded is-small click_to_retry ml-5 is-valign-middle">{% trans %}retry{% endtrans %} (<span class="retry_counter">X</span>s)</button>
        </div>
    </div>
</div>