Solved strange concurrency crashes due to players keypress-activating disabled buttons

chore: Removed vestigal city.apply{} for CityInfoConquestFunctions, for clarity on what is actually for the city and what is not

Resolved  -  'liberate city and resurrect civ' no longer crashes

AI no longer purchases non-contiguous tiles

Resolved  - city name translation for conquered popup does not get icon

By SomeTroglodyte:
- Promotion picker allowing picking chains in one go 
- More defensive coding of speedupWonderConstruction 

Fixing workers dying in mountains bug for Carthage  - By random271

Check for trigger uniques when starting and recaluating population  - By SeventhM