Fix bicycle weighting

[mpadge]

(Unrelated to #200) UrbanAnalyst/uaengine#10 documents all the tags necessary for accurate bicycle routing, and these notably include tags that are not included in bicycle-weighted networks here:

• cycleway
• cycleway:left
• cycleway:right

The weighting needs to be modified to pick these tags up as well, and return them as extra columns of the resultant data.frame.

[mpadge]

Re-opening becuase the grepping of all "^bicycle" and "^cycleway" tags was too much, and leads to network tables with way too many columns. Need to reduce to minimal useable set of:

• "bicycle"
• "cycleway"
• "cycleway:left"
• "cycleway:right"