Upgraded projekktor.js to V1.2.35 to fix native HTML5 support

The HTML5 audio is broken in newer Firefox versions. This fxes it.
compare 
![screenshot from 2013-08-12 22 49 24](https://f.cloud.github.com/assets/239553/950577/7078c050-0391-11e3-8e50-c5527c9f3bce.png) to http://213.133.99.233/videos/sued-001-vorstandssitzung-vom-30072013/