Bug 1094088 - [Loop] Update Loop Mobile Client with 2.2.9.3 OpenTok library

See bug https://bugzilla.mozilla.org/show_bug.cgi?id=1094088 please.

Action happens at https://github.com/jaoo/firefoxos-loop-client/tree/1094088 branch.
Why not use '../libs/tokbox/' +  window.OTProperties.version + '/js/TB.js'; ?