Add a badge guide

[Vitiman]

I know it's fairly low on the totem pole, but it would be nice to fix how the badges display as well. Currently, there is no spacing between badges (the images touch each other from all directions), and they align from the center instead of from left to right, which looks incorrect when you have an odd amount of badges. It would be nice to restore how they're drawn on the mini profile from the phpBB forums, since that would fix both of these fairly minor issues.