Styles now lists the production designs by family, and puts every
experimental design last, in one Experimental (in progress) group that
starts collapsed (a click opens it). Experimental: the side-lane country
sheets (66x66, 36x60, and 60x96, still being designed), the map print (no
preview: it prints the live map), and every other plugin's design (made by
its own plugin, so not drawn here). templates.js marks them experimental;
posterDesign.family.experimental is new in all 11 locales.
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