TIDOC-971 Build script & configuration file changes for Cloud docs site.

- New option for generating each set of docs into its own output dir so we don't constantly overwrite doc versions.

- Added Cloud into the pulldowns.

- Checking in the dumb-as-nails scripts I use to build & copy the doc sites for production. They are not replete with logic, but they pretty much work.

Best tested with the semi-related JSDuck PR: https://github.com/appcelerator/jsduck/pull/23