bump version to 2.1.3
- Release 2.1.4
- Updated GoogleProvider to use the new Google endpoints (see https://developers.google.com/+/api/auth-migration#timetable)
updated changelog in docs
Adjust docs for 2.1.4
Merge release 2.1.4 into 2.1.x

Conflicts:
	ChangeLog
	samples/java/demo/project/Build.scala
	samples/scala/demo/project/Build.scala