and also first check whether we have an occupant with that nickname.
Since roles are session based, it doesn't make any sense to try to
modify the role for a user not in the room.
- new config option `singleton`.
- new plugin `converse-uniview`
- removed `converse-embedded`.
- various CSS changes, to properly render an embedded full app
- don't re-open cached and non-autojoined chats in singleton mode
The goal here is to extend the `embedded` `view_mode` so that the full app can
also be embedded, not just a single MUC or private chat.
To do this, we'll need to differentiate between multi and singleton chat apps.
* A singleton chat app contains only a single chat.
* A multi-chat app can contain zero or more chats
So we introduce a new config option, `singleton`, which when used with
`view_mode` set to `embedded` will determine whether a single chat or the full
app is embedded.
Similarly, in `overlayed`, `fullscreen` and `mobile` view modes, `singleton`
set to true will allow only one chat within the parameters of that view mode.
We're appropriating the word `singleton` and introducing the concepts of
`uniview` and `multiview` (see a785ca8) to cover what was
previously meant with `singleton`.
updates #1297
- Use native `getTime` method instead of moment's `valueOf`
- Use toISOString() instead of moment().format()
This makes the code timezone independent since we're now globally using UTC.
Messages (received directly or via MAM) are stored in a backbone
collection that's kept sorted by the message's "time" attribute.
Various parts of the codebase rely on this behavior.
For regular messages, the time attribute is generated by
`moment().format()`, which generates a timestamp in the browser's
local timezone, for example "...+02:00".
For MAM messages, we would previously copy the "delay.stamp" value
into the "time" attribute verbatim. However, that value is generated
by the server and is unlikely to be in the same timezone locale.
ISO timestamps expressed in different timezones cannot be sorted
lexicographically, breaking the premise of keeping the messages
collection sorted by time.
