Merge branch 'stable-2.16' into 'stable-3.0'

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

Change-Id: I59b5cf3e243e7fd14f8dd24bbe045aa4abd1a210