Updating to latest masters

Deployed new service (c4c7fbfb743306ad0dd7dfce1475ded536f68f97):
* Log metabook on every request.

Deployed new latexer (820334a8452762f958e3ebf1a5342d9a667a7b0a):
* Allow lists nested nine level deep (bug 71896).
* Fix non-curly quotes (`extquotedbl` in output).
* Don't crash when the page title is RTL.

Change-Id: Ie94194eba399718bedf72ad601aa62f6db7ec85f