Deployment tooling/Cabal/2016-04-18

Adoption tasks

 * Citoid, Mathoid and both Zotero repos are now using Scap3 \o/!!!
 * Guide for other Node.JS services: https://wikitech.wikimedia.org/wiki/Services/Scap_Migration


 * redefining keys for deployment users - https://phabricator.wikimedia.org/T132747