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selected-nav.mp4
Caches navigation for significantly faster build times.
Uses javascript to set the current page selected and expand its parent. Something we already do as we keep track of which nodes the user expanded.
Includes a few javascript speedups too.
We burn an overall navigation uuid into nav, if the users state does not match this we reset the users state. This prevents needlessly growing the users sessionStorage with UUID's that won't be valid anymore since the HTML is regenerated.