AGPUSH-1074: fix simple-push version payload sending

Conflicts:
	push/src/main/java/org/jboss/aerogear/unifiedpush/message/sender/SimplePushNotificationSender.java
Merge branch 'AGPUSH-1074-simplepush-fix-version-payload'
fixing duplicate imports
now validates chrome packaged apps device ids
refactored away some duplicate code
Merge branch 'chrome-apps-variant'
using new parent to consume latest Keycloak
confirm remove app/variant dialogs with enter AGPUSH-998