Shoutbox

There's a new window for choosing the active categories now, the character counter was added, and some minor improvements to the code were made.

I know about that bug, but the problem is that I can't capture the event when a new item is selected with the arrows. It's not part of the MsgPlus events, so I would have to capture the windows event for that but I didn't have time to find out which one yet. If somebody knows, I will implement it