Move public stuff from architecture content

We want to have normative, publicly content that we aren't ready to put in the service manual into a public repository. I think that only the 'language' material counts from the current set. It is required to be normative since it provides a language for all other architecture updates.
Rather than adding editor-specific configuration to this repository, could this be added to your [global .gitignore](https://help.github.com/articles/ignoring-files/#create-a-global-gitignore)? Otherwise we're adding content to the repository that's only relevant to anyone using the Idea editor.