Resolved  - Teleport units away from city center when liberating

Resolved  - don't add icons to selection boxes

chore: Moved TranslatedSelectBox to its own file in ui.components - see 

By SeventhM:
- Add unique for a promotion to be free 
- Fix cities getting the resource list of other cities 

Fixed AI unit attack decision making  - By tuvus

Fix ChangesTerrain unique for base terrains  - By SomeTroglodyte