Code review comment for lp:~widelands-dev/widelands/toolbar-dropdown-menus

Done. I don't expect this branch to cause any troubles with savegames, but it's best to be sure.

Tuorial 2 should also be compatible between current trunk and this branch, because it doesn't to any scripting on the toolbar menus. It will not be compatible with Build 20 though - we made a commit that accidentally broke it, and I haven't had time to track down the commit that caused this yet.