F-Bomb Rebalance (finally!)

Well, I finally rebalanced the distribution of letters for F-Bomb. It is soooo much better now. After some experimentation, I think I came up with a pretty good solution where it knows the frequency of each letter and based upon what's in the "next letter" queue it will pick something friendly (no more "X","Q","P","Z" in the queue). It's still challenging, but you shouldn't end up with impossible letter combinations any more.

Oh, I also added some nice little icons to the games page.

This is my last update for another few days. I'm off fishing now. Have fun!