[Haskell] HaskellWiki Update

[Ashley Yakeley]

There has been a lot of spam on HaskellWiki. Since anonymous edits have 
been switched off, a spammer tactic has been to create hundreds of 
accounts to evade individual account blocks.

To combat this, I have

1. deleted all user accounts that have made no edits;
2. switched off account creation;
3. blocked at least some of the remaining spam accounts.

This is obviously not ideal, as there is now no way for new users to 
edit the wiki. I will investigate appropriate ways to allow account 
creation.

-- 
Ashley Yakeley