FB social tracking
Merge branch 'master' of github.com:magento-hackathon/UniversalGaConversionTracking

# By Jernst Tempelaar
# Via Jernst Tempelaar
* 'master' of github.com:magento-hackathon/UniversalGaConversionTracking:
  Rewrite to new measurement protocol Some paramaters still need to be unserialized