v0.12.137: @newsroom.writer: ten questions, one graph, and the Thistlewood twin

Phil Venables' ten acid-test questions for a CISO's management tool, answered as a graph, in three parts joined by the new thistlewood trail. Ten questions, one graph, the reply: every question is a graph question, risk acceptance is half the answer, and our vaults, behaviour policies and back-testing fit the rest. Inside the Thistlewood twin, the tour: the ten answers one by one, the 29 decisions and the back-test. The Thistlewood decision twin, the vault page, built by the new admin/build/thistlewood_twin.py: an invented retailer as one graph in an sgit vault (6v7kyxf4), with its public read key, the app embedded, and a tour in screenshots. Only the public read key is in the repository (admin/content/vaults/thistlewood-twin.json). Figures tt-map, tt-loop and screenshots of the twin.