Simplify Latitude and Longitude #46
Description
Currently there are multiple config items that use Lat and Long related to a spot:
NOAA ERDDAP Sea Surface Temperature (SST) and DarkSky both use Lat/Lon pairs to access data.
ERDDAP is more sensitive to fidelity of lat/lon and may sometimes return a null sea surface temperature. DarkySky is less fussy and will return the nearest forecast data...
Based on options for global tide data, that will also use Lat/Long to pull data.
SO...standardize for config and directions.
Proposed:
spotLat - Latitude
spotLong - Longitude
These coordinates will then be used to access DarkySky, ERDDAP, and Tide data...hopefully. Needs testing and error case discovery.