Merge branch 'stable-2.13' into stable-2.14

* stable-2.13:
  Add .mailmap
  ListQuotes: Format with google-java-format
  Add REST API rate limits
  Add tests for RateLimitUploadListener
  Fix bug in message formatting
  Refactor limit exceeded messaging
  Fix documentation and prepare for extension w.r.t. new rate limiter types
  Format all Java files with google-java-format
  Prevent NullPointerException for default configuration

Change-Id: Id017f45dc97dc011419ffd1059f09e9c79951d49