Otherwise we might have stale disco info and no way to invalidate the cache.

fixes #1106

updates #1106

- Remove misleading comment and fix conditional logic
- Check that there's only one <item> element.

updates #1106

Fix two bugs as well.

- Pass by reference bug for presence defaults
- querySelector for `delay` returned nothing (use sizzle instead)

We no longer need inverse.css

updates #1091

updates #1091

updates #1091

updates #1091

updates #1091

updates #1091

for easier retrieval later and to work around MUC's inability to
retrieve VCards for users not in the MUC.

Updates #968

updates #968

updates #1094

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