Review (once more) MediaWiki configuration

[renoirb]

While working on sprint, the following "nice to have" weren’t worked on. Here are other things we can do to improve our setup.

Tasks

• Ensure Redis uses password
• Redirect old image pattern to new, e.g. http://docs.webplatform.org/w/images/7/7a/language.png http://static.webplatform.org/w/public/7/7a/language.png see also #43 and #58
• Ensure reCAPTCHA still works under SSL, related to #42
• Redirect former docs.webpaltform.org/w/img/ to www
• Redirect what had been served from static.webplatform.org to www
• Ensure gzip is enabled edge to client but not origin to Fastly. At least for wiki, so ESI will work
• Setup MediaWiki to use ElasticSearch #122
• Review how to separate our configurations from mediawiki code
• Review/use https://gist.github.com/WebPlatformDocs/e91bbfdc81dd85c2401a

Reference

• https://github.com/wikimedia/operations-mediawiki-config
• https://github.com/wikimedia/mediawiki/blob/wmf/1.25wmf22/.gitmodules
• https://github.com/wikimedia/wmf-utils