Merge branch 'stable-3.0' into stable-3.1

* origin/stable-3.0:
  Remove unused properties
  example-webLinkProject: Remove unused dependencies
  Refactor poms and build parent pom
  Update bazlets to latest 3.0 and maven build to 3.0.13
  Update bazlets to latest 2.16 and maven build to 2.16.22

Change-Id: Ic159038c8113720f1499e9598646498a3a68978e