[authors] [ping: sigrid, klaus] working on: UnterschiedePraesentationen

[Erich Christian]

hi all

made a review of UnterschiedePraesentationen.sxw changed a bit of 
grammar but it allover looks well.

Uploaded it to 
http://oooauthors.org/de/roh/UnterschiedePraesentationen1.odt and would 
appreciate somebody could remove the english text, or tell me, how to do so.

@sigrid, klaus
Unfortunately I failed to get the registration form for the 2nd 
reviewer, I had a 404 error instead, I'll try again later.

regards - erich