Version set to 1.2.3

Release 1.2.2

Version set to 1.2.1

Version set to 1.2.0

Merge pull request thingsboard#47 from volodymyr-babak/release-1.1

added latest tag for docker containers

Release 1.0.3: UI and Docker version update

Version set 1.0.2

Merge branch 'master' into release-1.0

Added license headers