[Tweak] Formations are back and FAST

[Shad]

Hello from Saigon! I've just brought the Formations branch of the Library back online. You will see a staggering increase in performance.

Whereas trying to view all the bajillion formations under Heer would fail 100% of the time, now the Heer tree loads extremely quickly: see for yourself!

Thanks again to Peter Lloyd, who essentially single-handedly curates our Formations section. I will be doing more work in the future on this badly neglected section, but this is a huge step in the right direction for now.

Time for a pint of Saigon Red!