UI improvements:

- Tile Info Table 
- Changed Black to Charcoal 
- Unit description table

Fixed cities built on pillages roads colored red

Fixed scroll position indicator

Fixed Thai diacritic support

Added "exit" button in world screen popup menu

Fixed AI religion belief assessment

Increase starting Luxury amount to match Civ 5 - By SeventhM

UI fixes: dividers, checkbox-to-text spacing, multiplayer tab connection button  - By Toxile (new contributor!)