Add first release of automatically updating game list

Because I can see things ending in tears if I keep editing this inside
Blogger and accidentally save a broken version, plus keeping a history
of my changes is just an awesome idea for so many reasons :)

I've removed my API key from the code for obvious reasons - if anyone
else wants to use this for any reason go and generate your own.
Game List: Switch to using labels exclusively for guide and misc posts

Posts labelled "guide" or "misc" are automatically categorised, and bo3b
has gone through and added labels for all those posts, so I no longer
need these override lists or the heuristics :)

Thanks bo3b!