Merge pull request #142 from zijistark/alpha

Couple things picked-out from the CKII debugger output
Opened-up sliders up to crown_levies_1 and revokation_1 for republics
Sigh. Yet another half-assed swipe at Crusade details

I'm, for whatever reason, having strange trouble getting the Crusade
target holdings to remove their conquest modifiers and refill their
levies upon success. It reeks of something amiss in the actual CB
(which has recently had a dodgy past encountering witchcraft and
the like), or else, it's some weird Paradox thing.  I've only ever
seen / used (a lot) those event effects inside any_demesne_title
before this, so I'm reverting to that usage now over
any_de_jure_vassal_title. I've always delayed the whole thing to
1 day after the CB completes.

I don't actually know whether this properly works, but I need to get
it committed, because I'm short on time.  I'm guessing 50/50 on
proper behavior, since I don't really believe in "just trying stuff"
without understanding the root cause of a problem, though no such
explanation is always available.