GA Bits

I'm unsure if I should even submit this pull request. But this seems like it'd be a good forum to decide if using GA is ok or not. 

The changes in question add Google Analytics based tracking to the mcedit-unified.net pages in the gh-pages branch. As of now myself, Trazlander, and two others from the project have access to the GA interface. Anyone that there is general agreement should be added will be added. 

Options as I see them: 
1) Pull request is accepted - We'll continue using GA for www.mcedit-unified.net. 
2) Pull request is rejected - I'll remove the GA code within 48 hours. 
3) Pull request is neither accepted or rejected - I'll remove the code after one week. 

Note: This change doesn't have to be permanent. If later on the general view of this shifts one way or the other we can always change things.