Archive markdown content - Japanese

[rosieyohannan]

Description

This PR archives the following:

• Markdown pages in Japanese
• Old server PDF generation files
• Server docs for unsupported versions of server

Reasons

All our Japanese language content is out of sync with the English by at least one year. We are migrating to a platform that does not support markdown content. I propose to keep the asciidoc files we have in Japanese for testing how the new system works for multiple locales. I propose that the markdown content should be archived rather than converted to adoc. IMO we would likely need to start over with new translations for a lot of pages when we kickstart localization as there has been so much drift between the English and Japanese versions.

Content Checklist

Please follow our style when contributing to CircleCI docs. Our style guide is here: https://circleci.com/docs/style/style-guide-overview.

Please take a moment to check through the following items when submitting your PR (this is just a guide so will not be relevant for all PRs) 😸:

• Break up walls of text by adding paragraph breaks.
• Consider if the content could benefit from more structure, such as lists or tables, to make it easier to consume.
• Keep the title between 20 and 70 characters.
• Consider whether the content would benefit from more subsections (h2-h6 headings) to make it easier to consume.
• Check all headings h1-h6 are in sentence case (only first letter is capitalized).
• Is there a "Next steps" section at the end of the page giving the reader a clear path to what to read next?
• Include relevant backlinks to other CircleCI docs/pages.