Fixed format for geolocalized.json
Fixed style errors
canvas:

Don't draw labels if they are empty
Merge pull request #467 from qinfchen/labelPosition

Fixed style errors
Merge pull request #452 from qinfchen/geolocalized.json

Fixed format for geolocalized.json
Merge pull request #469 from qinfchen/fixLabel

canvas: don't draw labels if they are empty