Adding version 0.12.0 (containing UPS.1.0.0.beta1)

Contains the Beta1 of the UPS (created out of 'https://github.com/aerogear/aerogear-unifiedpush-server/commit/e2bc321fd7e1b44af64acd30d35a5a7c644b9026' , using the `openshift` maven profile)

The SimplePush Server is the same as in the 0.11.0 version. @danbev let me know if you prefer using a different version instead

@fjuma based on previous convention, I am using the version 1.0.0, _instead of 1.0.0.Beta1