Geocoder - improve handling of alley location format #30
Description
Alley location text tends to produce geometry that stretches across half the city. We need to fix the initial geocoding and implement a script to find poorly geocoded alleys and redo them.
The main issue is we're looking for all intersections between streets that bound the alley, and most parallel streets actually cross at some point in the distance. We need to interpret which streets are North-South and East-West, and then only find the intersections between N-S and E-W streets.