As mentioned in the XEP, don't show error messages for OMEMO messages
that can't be decrypted because they were already decrypted before or
because they weren't encrypted for this device.
And use that to render images in unfurls.
This solves the issue of github URL unfurl images not having an image
extension and then being rendered as a hyperlink by `converse-rich-text`.
Instead, we know that it's supposed to be a url, so we just use `converse-image`.
This let's us populate the `from_real_jid` attribute for messages in
cases where the user's nickname has changed.
Only save the occupant-id if the MUC supports it
Store all advertised features on the `chatbox.features` model.
This allows us to look up a feature without using the async
`disco.supports` API.
Updates #2241
- Unregister nickname before sending unavailable presence
- Send unavailable presence before destroying state
- Call `leave` after unregistering, otherwise the disco entry for the MUC gets removed in `leave` while it's still necessary to unregister
- Wrap `this.leave` in try/except in `onConnectionStatusChanged` handler
- Add new MUC connection status, `CLOSING` to avoid `this.leave()` being called when `hidden` gets set to `true` while the MUC is in the process of being closed.
I noticed that a marker was sent for an error message (created due to an
unencryptable OMEMO messages), and this caused the user to be kicked
from the MUC.
This allows for more flexibility in configuring which media URLs will
automatically render and which media URLs may be manually rendered by
the user (via the message actions dropdown).
For example, suppose you want to automatically render all media URLs
from https://xmpp.org, but still allow other media (which won't render
by default) to be rendered manually by the user (by clicking the "Show
URL previews" message dropdown action).
In this case, you set `render_media` to `['xmpp.org']` and
`allowed_image_domains` to `null` or `undefined`.
Or if you want to automatically render images from xmpp.org, and
restrict the domains users might manually click to render, you can add
those extra domains to `allowed_image_domains`.
It's now necessary to add a `converse-root` element in the DOM where you
want Converse to render (previously it was any element with the id
`#conversejs`).
Also, turned `converse-chats` element into a Lit element and re-render
`converse-root` and `converse-chats` when the `view-mode` or `singleton`
settings change. This is a step towards being able to change the view
mode on the fly and have the entire chat re-render appropriately.
Fixes#2647
