latitude and longitude should be doubles!
numerous updates bringing ProxStorConnector up to speed

supports operations on:

Users
Knows
Devices
Locations
Nearby
JUnit testing for ProxStorConnector User-centric methods (and by extension ProxStor itself)
JUnit testing for ProxStorConnector User Knows-centric methods (and by extension ProxStor itself)
JUnit testing for ProxStorConnector Device-centric methods (and by extension ProxStor itself)
JUnit testing for ProxStorConnector Location-centric methods (and by extension ProxStor itself)
JUnit testing for ProxStorConnector Location Nearby-centric methods (and by extension ProxStor itself)
remove silly debug prints
remove silly debug prints