Bump otr.js

Fixes #564
Merge pull request #579 from arlolra/otr

Bump otr.js
Remove unused function
Fix Cryptocat not adding toolbar button in Firefox
Improvements to presence stanza detection
Revert "Improvements to presence stanza detection"

This reverts commit 48377b75b37653d6071e389683aa24698877ef51.
Fix presence stanza detection
Fix #582
Fix typo
Fix #537 and #581
Travis
Update libraries
Make buddy list font a bit smaller
Update Tinycon
Update EventEmitter
Make firstRun fit on smaller resolutions
Fixed locale «es.txt»
Fix error kindly pointed out by @koto

https://github.com/cryptocat/cryptocat/commit/e22d394a2237cb70e2f59dedf9
d77f04a3763404#commitcomment-5396821
Fix queuing scrolldown animations
Remve signing identity