Simple feature to make manual input easier

[releasethedogs]

Sometimes you just have to input info manually. It would be AMAZING to have a "next" and "previous" button so you don't have to close the edit window, select the next game and press the edit button again just to get to the next game.

[SentaiBrad]

I think this has been requested on the BitBucket before... but even so it's still a fantastic idea that I forgot about!