Allow more than one kind of background request
The C clients currently uses the action selection dialog background request to refresh the action selection dialog on new information. Freeciv-web uses it to implement fast auto attack. Make it possible to have more than one background request kind.
The C clients currently uses the action selection dialog background request to refresh the action selection dialog on new information. Freeciv-web uses it to implement fast auto attack. Make it possible to have more than one background request kind.