postmeme enhancements

Just a few ideas worth pondering. Rather than having fixed layouts the sysop has to cycle through.

F - cycles foreground B - cycles backgrounds J - cycles left/right/center justification T/L/R/M cycles through top/left/right/bottom border styles C - Continue to add more text under the meme. That way it could almost be used like a header or a banner. G - Select which group to post to