Added MathJax support to presentation mode.
Added MathJax support for question titlebar. Added method to set
titlebar height dynamically.
Replaced Sencha Touch 2.2.1 libs with newer build.
Hotfix for iOS 7 on iPhones
Added Sencha Touch 2.3.0b2 (Beta 2) to libs.
Merge remote-tracking branch 'origin/master'
Merge branch 'master' into ecollab.eu