Better great general placement calc

Resolved "dead population working tiles" bug

Resolved  - generated maps no longer contain forbidden tile arrangements

Resolved  - games where it's your turn are displayed first in multiplayer popup

Order indicators in TechScreen like original Civ V  - By lishaoxia1985

By Gualdimar:
- Fixed the display of political relations  
- Fixed overview resources tab state check 
- Non-integer resource modifier now applied to the civ-wide scope 
- Fixed pillaged improvement defence bonus 

Fix MapEditor world-wrap flickering  - By vegeta1k95