HA Bridge Security Implementation

HA Bridge now has the ability to be secured by user name and password. Also, the security of the "Link" button like a real Hue to control access and other fixes.

See https://github.com/bwssytems/ha-bridge/wiki/Security-Configuration for instructions

BridgeSettings.configWriter needs synchonized question
#571

[feature request] Web Users/Login enhancement
#402

User authentication... question
#270

Security VS habridge enhancement question
#390

issue tcp command bug
#564

Device inactive not working bug
#565