Code review comment for lp:~widelands-dev/widelands/bug-987510

I have not tested it in the game, but some ideas based on these comments:
- I imagined that when the news window is open, 1-5 would act on it (6-0 should do nothing). When it is not open, they work as location marker. Ctrl+number is also already used. I do not know if Widelands currently supports this. The problem is that many keys are already used (g = geologist/GoTo, s = seafaring/statistics) and that they would make no sense in translation.
- Why not simply write "Hotkey: %s"? That should avoid any confusion.