Feature/bridges

[olafveerman]

Prepare the bridge and culverts. This will results in .tmp/bridges.geojson with all bridges and culverts. Among other things, the script:

• determines whether its a bridge or a culvert from the name
• checks the closest road segment and stores that ID on the feature

There is one pending question around the duplicates in the source data. We can address that once we get a clarification.

[olafveerman]

This is now ready to be reviewed and merged. We can address the pending question later.

[olafveerman]

BTW, the tiles that are in the S3 bucket were generated with this branch (+ master) In case you want to test the outcome.

[danielfdsilva]

@olafveerman made a couple of parameter handling improvements. All good otherwise. merging