updates #497

and if so, generate a new one.

To do so we have to change the order of events.

1. first we fetch our device list
2. then we generate our bundle info (if necessary)
3. then we update our device list (if necessary)
4. then we publish our bundle

updates #497

updates #497

updates #497

Since you can still start OMEMO sessions with contacts without it, they
just can't create sessions with you.

updates #497

Fix and improve accordingly. updates #497

updates #497

Add 3rd party dependencies

updates #497

Various fixes to code checking for server and contact client support

Hopefully later we can use NPM for them, first want to get things to work

Initial work on adding OMEMO support

updates #1094

Otherwise subtle, hard-to-reproduce bugs happen while testing.

Also, don't unnecessarily call `delegateEvents`, it also causes
heisen-breakage.

So that we can cache roster data for longer and presence data for
shorter.

after sending

Also remove the `message_storage` setting.

Instead of padding the container, pad individual elements that need it.
This enables us to have highlighting (e.g. on hover) that spans the full
width of the controlbox.

updates #1069

in the overlayed view_mode

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instead of informing all users every time someone enters the room.

so rename model and only use it in the VCards collection.