ModeratorCP -> Reported Content: discussions with authors

Reported content often needs some discussions with the one who reported and the one who posted the content.

Now we have to use private messages or mail and tell the other moderators about it.

If we had two more fields like the comments, one for the reporter and one for the author, we could have the discussions there and at hand, if any moderator needs them.

It should be possible to use something like the support part of the suite.