bd4c7ce578
This PR cleans up the docs in a way to make them simpler to ingest by our [docs repo](https://gitea.com/gitea/gitea-docusaurus). 1. It includes all of the sed invocations our ingestion did, removing the need to do it at build time. 2. It replaces the shortcode variable replacement method with `@variable@` style, simply for easier sed invocations when required. 3. It removes unused files and moves the docs up a level as cleanup. --------- Signed-off-by: jolheiser <john.olheiser@gmail.com>