am 2548ceb9: am 8c423d72: Merge "Raise the default max-age for client side caching to 43200 (12hrs)." into jb-mr2-docs

* commit '2548ceb98a8c777ec354db18ed5f5e86558dabca':
  Raise the default max-age for client side caching to 43200 (12hrs).