AI is displeased when you become the new ally of a city-state it was the ally of

Resolve  - kick/skip turn in mutliplayer only active if the game contains the current player ID

Added Barbarian image variants for AbsoluteUnits by Pelo

extremely minor perfs

perf: 'all techs are researched' now cached per civ

perf: Map modifiers by type for fast lookup

perf: minor memory perf

perf: Save resource uniques when resources change, so we only need one lookup for all resources for uniques