[Haskell] External reviews

[Gabriele Keller]

If you prefer to have two separate review forms, I can add dummy PC 
members to the PC for this purpose. So, please let me know if you want 
me to set it up for you, and for which papers you would submit two 
reviews. However, I would also need an email address different to the 
address of the main account (the system doesn't let me add two PC member 
with the same address)

Gabi