Polish translation of version 0.8.6.

Conflicts:
	docs/CHANGES.rst

Also, fixed all broken tests.

- Don't add a timeout for the GONE state.
- Change state to GONE when the user closes the chat box.
- Change the state to inactive when the user minimizes the chat box.
- Change the state to active when the users maximizes the chat box.
- Add more tests for chat states.

Merge branch 'add-allow-registration-doc' of https://github.com/gbonvehi/converse.js into gbonvehi-add-allow-registration-doc

Conflicts:
	docs/CHANGES.rst

Add fullname and jid to contact's tooltip in roster

It seems title attributes are limited to 512 chars, we will have
to live with that unless a custom tooltip is used.

Converse.js will now send chat state notifications of <paused>, <inactive> and
<gone> when the user has stopped typing for 30 seconds, 2 minutes and 10 minutes
respectively.

removes need to modify index.html all the time.

Thanks to hawkee for the tip.

Conflicts:
	sass/converse.scss