chat: Add forward, rich editing and extra recipients: - There is a new "forward" menu in message. For now, a simple prompt ask for recipient JID. - A new "extra" menu is available next to input field. Inside there are 2 items for now: add extra recipient, and toggle rich edit mode. - Extra recipient option add a field to add an email-like "to", "cc" or "bcc" recipients. - Rich edit let use rich styling such as bold, italic, underline, etc. rel 461

{% import 'components/avatar.html' as avatar with context %}

<div class="is-flex is-align-items-center">
    <div class="mr-2">
        {{ avatar.avatar(item.entity) }}
    </div>
    <div class="is-flex-grow-1">
        <p class="mb-0">{{nick}}</p>
    </div>
</div>