Cryptocat 2.1.22

*Note: this release is currently in the process of being rolled out to
production. The delay is that so we can launch the update across all
platforms simultaneously.*

- Authentication is completely redone. Now, Cryptocat has a new, better
and more useful authentication interface that reminds users to
authenticate, shows authentication status, and even includes a
slideshow tutorial on what authentication is and why it's important.
Learn more about the authentication improvements on our blog:
https://blog.crypto.cat/2014/04/recent-audits-and-coming-improvements/
- Authenticating via secret questions (SMP) now authenticates both
group conversations and private conversations.
- Keyboard shortcuts! Press `ctrl+2` to switch to the next buddy, and
`ctrl+1` to move back to the previous buddy.
- Important user interface change: the active conversation no longer
switches to the top of the buddy list. This is done so that keyboard
shortcuts can work better.
- Fixed a bug that made conversation content "jump" when a user
finished sending a message for which there was a "typing" icon.
- Many improvements to the user interface.
- Many small improvements and tweaks.
- Many translations have been updated.