2.05.2:schwarherz:2 many files, few changes

mostly stole a couple things from VIET that I noticed were better than
what we had. Other than that it's a bunch of places where I traded age =
16 for is_adult = yes. Also changed de jure assimilation back to all at
once, kept kingdoms at 50 years, bumped empires back up to 100.
2.05.2:schwarherz:3 Isaac

removed Isaac of Kazaria from the 1066 character selection since he's
unlanded at the time.
2.05.2:Miaow:9 localisation fixes
2.05.2:zeress:12 Horusian Guard Fix

- Horusian Guard now activates properly when the decision is started