Fixed vanilla NAE
Localization fixes

I found at least one file which had the wrong encoding (VIET_Celtic.csv)
but was able to fix it.
Minor nicknames cleanup
Removed references to PB only buildings

Vanilla and Common both had some province histories referencing PB
buildings.
Tiny vanilla religions fix
Minor retinue and trait fixes
Himalayan culture group fix
Updated lover scopes

Since characters can have multiple lovers now it's probably better to
get rid of all the old lover scopes. I also took the liberty of fixing a
vanilla event Paradox forgot to update.
Hopefully fixed spymaster events
Removed PB crusade events
Vanilla PB_Culture.txt fix

If I ever meet the creator of AO in a dark alley, I'm going to give him
a thorough lecture on the value of properly formatting your bloody code.
Fixes for vanilla VIET's PB integration

I think it's mostly straightened out now, but keep in mind that there's
still (and always has been) a mismatch between the VIET and PB versions
of e_byzantium. You may need to go through PB_historical.txt and adjust
all the title references to make sure the events are doing what they
should.
Deleted redundant PB+VIET files

These were all identical to PB.
Brought a few files up to date with PB

I don't think I changed anything you modified intentionally but feel
free to poke through and make sure.
Deleted redundant vanilla VIET files

All these files were identical to their vanilla counterparts.