FIBS engine
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- add the accumulated online time in the lower right corner of the 
  main window status bar
- add user profiles with different username, etc.
- port the FIBS help system from KFibs 
- add buttons for accept and reject ?
- automatically translate messages --> replace \"a by ae, etc ?
- toggle double is NOT automatically set at the beginning of 1 point games!
- clean the header file