Change to PM functionality

[VGPolyglot]

Machina said:

NintendoPie said:
All of your banners obscure your own avatar. How mighty your achievements are.

We could actually do with a sales one too, but it's not very high on my wishlist atm, at least not until an adjustment tool is built

Once added it'd be possible for someone to have 6 banners (Site Admin, Moderator, Sales, Writer, Game DB Admin, Supporter).

8 maybe, with the Ambassador and Ruepel tags too