Optimize the ward boundary data.

[santheo]

New scripts.js is 37kb. Here's the script I used to convert the old wardPaths:

var newPoint = function (pt) { 
  var minlat = 41.644553;
  var minlng = -87.525162;

  return [
    Math.round((pt.lat - minlat) * 1000000),  
    Math.round((pt.lng - minlng) * -1000000)
  ];
};

simpleWardPaths = _.map(wardPaths,function(ward){ return _.map(ward, function (point) { return newPt(point); }); })

I got those minlat & minlng by flattening wardPaths and finding the mins.

[santheo]

Whoops, this pull request is set to go into development. If you merge it, you can delete your 'simplify_boundaries' branch, since this is a branch of that branch.

[santheo]

Closes #201.

Meanwhile, I'm working on further byte-lightening by encoding each normalized number as a set of unicode chars. I've got it working on the encoding side. I haven't done the decoding part yet. Here's what it looks like. The weight of the encoded data is roughly 57% of the normalized data.