Rewrote Catholic schism mending event

Now also notifies other rulers and handles conversion in the same way as
the pagan reformation event
Merge pull request #143 from thefinestsieve/beta

Rewrote Catholic schism mending event
Removed tax penalty from culture buildings
Fixed one tier of the Ethiopian building having the wrong stats
Updated culture buildings
Updated documentation
Namespace conversion: Waylit
Namespace conversion: Old Age

This is a good candidate to move to the new static modifiers at some
point
Namespace conversion: Duel Engine
Merge pull request #144 from thefinestsieve/beta

Numbered event conversion
Minor crusade fix

We don't want to prevent Zoros and Jews from targeting Ethiopians
Another crusade fix

Missing Root scope
Localisation fix
Cleaned up Catholic schism event
More cleanup for schism and waylit events

Cleared away most of the bracket forest and fixed a couple issues
Adjusted changelog
Merge pull request #145 from thefinestsieve/beta

Additional waylit/schism cleanup and tweaks
Tartaria fix
Partial 2.1.4 update

There are also changes to the form Hungary decision, the form Hungary
event, and the ruler designer defines, but all of those are above my pay
grade
Merge pull request #146 from thefinestsieve/beta

Partial 2.1.4 update