bump otr.js
Merge pull request #568 from arlolra/otr

bump otr.js
Fix dimensions of missing recipients warning message box
Fix #547 and #557
Remove unnecessary jQuery mapfile
Fix #550
Remove Mac code signing
Refactoring
Update jQuery
Update jQuery color
Remove testers from contributors
Fix #573
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.
Restore #233
Comment out changeNickname
Fix Tor submodule
Fix bug that broke group chats with exactly 2 participants

Also known as the world’s most frustrating missing `=`
Cryptocat 2.1.20

**This is an important update with fixes for both usability and
security.**

- Fixed a bug introduced in Cryptocat 2.1.19 that prevented group
conversations with exactly two participants from working properly.
- Addressed a security risk that could allow an attacker to divert the
destination of outgoing chat messages.
- Added join/part notifications to one-on-one conversation windows.