Leugi's Mexico Government Rework

Reworks the unique Mexican Government theming it around Muralism. Requires Leugi's Government Flavour Changes. The idea of giving a unique government to Mexico based around revolutions is kinda neat, but with the recent Test of Time patch and because of the recent government changes it lost a bit of its luster, as the other governments feel more complete and compelling from the get go, specially when outside the Modern Age. It doesn't help at all that France even out of its Apex manages to keep the promise of being a versatile civ with many celebrations without any additional sacrifices. So I've been wanting to give a rework to how the Revolution government works, and adding a bit more of a Mexican flavour to it; to do so I decided to refocus the whole government and civilization around Muralism and how it tells the history of their nation throughout the ages. Now each of the celebrations represents different Murals from Mexico's history, and as such they also grant the murals the first time you dedicate to them! Additionally, the government itself now starts with 2 celebrations like all governments and has an additional tradition in each age so if you play Mexico in all Ages you dont have so many less traditions than other players. Revolutionary Convention Bonuses Base Bonus: Celebrations grant an Ageless Great Work the first time they are picked and Palace and City Halls receive a Great Work Slot. Gain a Tradition Slot for every 10 Great Works displayed. Reworking the base