Make DMS parsing more robust

[RobQuincey-DC]

Parsing lat/lon in Degree/Minutes/Seconds format is very flaky and requires a very precise format in order to get picked up. It also cannot handle Degrees/Decimal Minutes format at all.

There are a couple of libraries that may help with this:

• https://github.com/WSDOT-GIS/dms-js
• https://github.com/gmaclennan/parse-dms

May require some playing to figure out the best option.

Ideally, the system should be handle all the weird ways people input Lat/Lon and convert it appropriately.