Upadate widget. It can pass some data to server now
Visitors can reject invitations not only hide
Fix bug with cookie update in widget

Widget update target site tracking cookie only if it is absent
Fix bug with multiple scripts loading by widget
Create SoundManager model in Chat JS Application

It help to unbind messages collection view and message form model
Completely rewrite invitations
Update license headers in CSS files
Automatically hide invitation popup

Invitation popup will hide if invitation canceled by operator or
closed by timeout.
Fix notice about undefined 'send_shortcut'
Clean up JavaScript code of the Widget
Update invitation preview
Update threads history

Do not show threads related with ignored or rejected invitations.
Fix bug with invitation state retrieving in widget.php
Send messages about close invitation by timeout
Remove unused invitation's localized strings