Makes the docs look similar to the main site

Conflicts:
	index.html

Features are saved to localStorage so that service discovery doesn't have to
happen during every request.

This was added earlier for debugging, removing it again now.

- Still needs caching and optimisation

Now that standalone contact adding works

It depended on triggering events for which we've removed the handlers

- Removed the $(document).ready handler. Instead, converse.initialize must be
  called manually together with settings data.
- As a result the Plone specific event listeners are now also gone.
- Update tests and index.html to deal wit these changes

And a file with some preliminary notes

New conf variable in converse.js to indicate how contacts are added (either via
XHR or directly).

Controlbox's status widget was being overwritten