Bunch of stuff

Mostly fixes and cleanup, plus a couple new images. If you end up preferring the old Secular Franciscan icon I can switch it back easily enough, but I think the new one looks better. Also, as I note in the specific commit message, I suggest giving the Latinokratia events a thorough checking, or having ziji do it when he gets back, as I'm almost positive there are other errors lurking in there; and there's definitely some issues with Latinokratia events referencing titles which don't exist at all or are missing from PB+VIET