Determines whether search suggestions are shown in the "Add Contact" modal.

We need it for mobile where (eventually) we might have the participants
sidebar occupy the whole screen.

such as <https://example.org>

We need to wait for the state to be fetched from storage before
rendering the list.

* Ensure that outgoing messages are also marked as single emojis
* Also set msgid to origin-id for sent groupchat messages

When set, the "Nickname" field won't be shown in the "Add groupchat"
modal and instead the nickname will be automatically set (based on other
config settings).

above other nickname sources.

This is a fix for https://github.com/conversejs/converse.js/issues/1508

when creating attributes for outgoing message.

Otherwise `id` is the same for all messages.