1) Fixed GenUtil ok() and ko() which had acquired an extra "server"
attribute besides "ok", presumably due to some quick dirty hack
while debugging something.  

2) Fixed readIndividualDataNotMapped not to throw exception when an
individual is not found. 

3) Changed OperationService.readInvididual to return ko("not-found")
when the reading of an individual results in 0 axioms.

4) Removed hand-coded citiesToAgency map in answerhub.js. Same
information is already in cirm.refs.cities, 
which is loaded from the ontology, so got it from there.

5) Using same mapping from city names to OWL individuals, removed
hard-coded reference to setting 
default agency to Miami-Dade County on
legacy.InteractionEvents.AddressValidated event processing.