[Forum] Swap "new messages"/"no new messages" images.

[Deantwo]

I also agree. After taking some time searching for how to make that change, I gave up.

Looked around a little bit and found where the status icon is computed:
http://hazeron.com/mybb/cache/themes/theme3/global.css

Code:

.forum_status {
height: 30px;
width: 30px;
background: url(../../../images/forum_icon_sprite.png) no-repeat 0 0;
display: inline-block;
}