Updating to latest masters

Deployed new service (526b7b1e90d3b32c65e1cc0cdc2cef2d71ffa2b0):
* Unify logging through the service wrapper
* Add a human-readable help page to quickly test/check the service
* Make sure the collection id is specific to the selected backend
* Ensure that default temp and output directories exist
* Use `/etc/mw-collection-ocg.js` configuration file if present.

Deployed new bundler (05a34aef7e31d8073471327b2cbff989a962257d):
* Use new log and status reporting framework

Deployed new latexer (c784b335525390b1da5d2f64a8503330175f08a3):
* Use new log and status reporting framework

Deployed new texter (c0360962459362e2de8cd2bbc44e7516a6037f9d):
* Use new log and status reporting framework
* Add -T option to CLI to specify a temporary directory
* Allow rendering from unzipped bundle

Change-Id: I59843c13f6f48e74cb08b68a16e5a0989a89de32
Merge branch 'master' into wmf-deploy

Change-Id: Ibdd3be8c50d7e5946b245a6bb4d47797ec9158d5