Map updates

Dublin is called Dyflin if part of a Norse realm
Ensured most of the title files are up to date with 1.10; a few dejure
changes, but mostly just cultural names and such
Flanders is now dejure French
Greeks will no longer try to restore external inheritance in Byzantium
The AI will generally wait until it's stronger before launching faction wars
Fixed Hamburg's ships being unusable
Removed duplicated directory
Tweaked religion colors
Added readme to repo
Red Zoroastrians
Rebel imprisonment fix

Fixed one issue with the siege imprisonment events that could lead to
rebels holding characters prisoner
Merge pull request #1 from MaestroUgo/master

Shouldn't be too hard to figure out.
Tiny change to siege code
Improved conversion AI

Made the AI smarter about who it'll send their court chaplain to convert
Fixed Østlanded being blue

Never made it into the master
CB changes

(Based on 1.101 changelog) Subjugation can only be done done once per
lifetime unless you've got the Become King ambition
(Based on 1.101 changelog) Norse Pagans can no longer employ the coastal
conquest CB against other pagans (neighboring counties can still be
taken though)
Tengri Pagans are now limited to Agnatic succession
West African pagans can now also raid
Byzantium Gavelkind eliminated

867: Byzantium is now properly on Primogeniture, not Gavelkind
Merge pull request #2 from Meneth/beta

3.1.10