Move advanced topics of shared concern to "Advanced Topics" section #259
Description
The SecureDrop development ecosystem keeps growing in complexity and will continue to do so for a while until it contracts again:
- Packaging of
securedrop-adminfor Qubes & Tails (in progress) - Electron App rewrite of SecureDrop Client
- SecureDrop Protocol based PoCs and eventually full implementation
- Dveloper tooling across repos / projects / components
The "Getting Started / SD Server / SD Workstation" distinction doesn't quite cut it anymore. For starters, I would suggest adding an "Advanced Topics" section which could include things like Dependency Update Policies, feature specs that span implementations, and other sections that don't quite fit under any of the existing chapters.