Removing useless function.
Replacing old sos parsing function with new one
Made missing values public-facing for testability.
refactored map.js to use new parser function
Punting on openlayers SOSgetObservation parser due to inconsistencies exposed while writing tests. Beginning revert back to in-house parser.
Fully reverted to in-house parser. Adjusted tests.
Merge pull request #17 from cschroed-usgs/WATERSMART-105

Watersmart 105 - reverting to in-house parser