Allow Admin to reset users' passwords

I haven't tried this in RC2 (didn't know it was out, actually), but in 1.1 RC1 it's not possible for the Admin user to reset the passwords of other users. This is a key administrator function, so I added the functionality by editing the XWikiUserSheet, changing:

  #if(($doc.fullName == $context.user.substring($i)) && ($context.action == "view"))

to:

  #if((("XWiki.Admin" == $context.user.substring($i)) || ($doc.fullName == $context.user.substring($i)) )&& ($context.action == "view"))

This gives Admin access to change user passwords in the event the user forgets his password, or otherwise becomes locked out.