Blog deprecation (2.7)

Status Quo

The original developers of this tool (from Lancaster U) can no longer maintain it, and in fact are maintaining an alternative to it in contrib instead.

Proposal

Stealth the tool and mark it as deprecated. It can be removed in a future version. Devise recommendations for if/how to replace it in 2.8, including migration paths where possible.

Who would be affected

The tool could of course be unstealthed by those who wished to continue to use it in 2.7. As yet there are not definite plans to replace it for 2.8, let alone what a migration path might be between it and whatever would replace it.