* Split off reuses of CityStateIcons/Cultured to allow modding separately
* Reposition floating tutorials in case the TopBar moved its buttons
* Event definition, art and basic support
* Split off Event rendering from AlertPopup
* Support Event presentation modes and replace hardcoded floating tutorials
* "Meet another civilization" art - can't find any better
* Tweak TranslationFileWriter and some polishing
* Reverted spy button to show the spy white icon
* Changed the docs credits
* Espionage button now uses a separate path
* Reverted changing Icons.png
* Changed Espionage.png to the new sprite
* Replace and credit "Link" icon
* UnitActionIcons/Escort is a black version of "Link"
* Reprioritize UnitGroup "action" badge to prefer showing what Workers build over escorting