Various small changes.
* changelog.txt: update version
* js/chat.js: minor tweaks
* js/jquery-cookie.js: renamed from jquery.cookie.js, to avoid error 406
* js/socket.io.js: new file
* makethread.php: deleted
* src/defines.php: update version. Update script paths.
Status update. Remove makethread.php
Make chat invisible until after initialization.
Changelog update.