Update to Freeciv server r34757.
Update to Freeciv server r34757.

Freeciv commit message:
Prepared trunk for 3.1 development.

See patch #7760

andreasrosdal/freeciv-web,andreasrosdal/freeciv-web,andreasrosdal/freeciv-web,andreasrosdal/freeciv-web,andreasrosdal/freeciv-web