Refactoring
Change text
Error dialog box added for re-AKE

cc. @arlolra
Fix #574
Actually adopt new fingerprint on re-AKE

cc. @arlolra
Auth tutorial slides!
Add  localization
One more string
Keyboard shortcuts!
World's most innocent commit
De-obfuscate easter egg

I was hoping to keep this somewhat hidden, but I don’t want to cause
drama by having obfuscated source code
Add mousetrap classes
Fix Travis
Add Slovak translation and update 14 translations
Small change to language selection UI
Authenticate the multiparty key if available

 * Warning: breaks backwards compatibility.

 * If there's a mp key for the user, add it to the secret when
   performing the smp. Detect if that key changes (or suddenly becomes
   available after authentication) and warn the user.

 * This definitely needs review.
Refactor smp answer preparation

 * Also, a more descriptive warning func name
Improve auth tutorial UI
Comment formatting
Fix bug with rendering of missing recipients warning