Replace existing Analytics with new script

[jordanmccullough]

Per Training Team discussion, updating the Google Analytics script for tracking all page metrics.

[brntbeer]

Assuming this is copy/paste from somewhere. Any context?

[matthewmccullough]

@brntbeer Good question. Via "Should we keep recording command line history from live classes?"

[matthewmccullough]

@jordanmccullough I'm not sure this also hit the homepage (http://training.github.com) as I don't think it used the bare template. Other places to embed the script?