[imp] a change on the lists terms

[liamr@umich.edu]

> The terms "correct list" and "wrong list" are not grammatically 
> opposites (correct/incorrect, right/wrong), and neither mean 
> allowed/disallowed. Your best bet may be "allow list" and "block 
> list" (but then to pick at myself, it should be "accept" and "block").

We chose "accept list" and "block list" at UMich.  We found the easiest 
way to make the change was to create a en_US translation and do it 
there, so we didn't prevent other translations of the term from working.

Liam