Decoupled CTA from PB to ease maintainability

Modified structure will make it easy to merge new versions of NDE into
PB that have [some version of] CTA directly integrated.
Merge pull request #54 from zijistark/cta-decoupling

Decoupled CTA from PB to ease maintainability
Case
Case
Ethiopia fix
Slightly higher fertility
Fixed movement bug
AF cooperation: uniform coverage of AF member vassal sub-realm
ChangeLog
Merge pull request #55 from zijistark/af-cooperation

AF mil/eco cooperation
Started work on Shattered Balance
Merge branch 'beta' of https://github.com/Meneth/PB-git into beta
3 modules available via decision
Legalism buff
Better CB req localisation
More localisation improvements
Muslim city vassal request fix
Merge pull request #56 from thefinestsieve/beta

Muslim city vassal request fix
Missing is_triggered_only
Coerced members improved