Petra: prevent overseas attack to try to start before dock construction

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15583 3db68df2-c116-0410-a063-a993310a9797
Handle callback functions when using the "leave" hotkey (by default Esc) to close a message box.

Fixes #2635

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15584 3db68df2-c116-0410-a063-a993310a9797
remove the hardcoded StartingCamera of player 3 which was pointing to player 1 location

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15585 3db68df2-c116-0410-a063-a993310a9797
Small code style fix, related to a typo in the documentation. Also updates the Example component's copyright to match the current year.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15586 3db68df2-c116-0410-a063-a993310a9797
Petra: small changes in naval transport to (hopefully) make it more robust

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15587 3db68df2-c116-0410-a063-a993310a9797
Merge 'remotes/trunk'