Cryptocat 2.1.19

- Cryptocat now supports anonymous SASL authentication.
- Fixed a bug that prevented tooltips for chat settings from displaying
properly.
- Fixed a bug that would prevent the sending of messages if the user
was the only person in a conversation.
- Fixed a bug that prevented text from showing in desktop
notifications.
- Updated OTR.js and jQuery libraries to their latest versions.
- Other bug fixes.