[development] Confusion by too many issue queues

Hi there, as much as I am pleased with the outcome of Derek's efforts, I'd like to reduce the number of issue queues for Drupal again. We currently have three queues for what used to be HEAD. IMO it doesn't make sense to have a 6-dev queue /and/ a x.y.z queue _on_ _top_ of a 5-dev queue and a 5.1-beta queue. While you can find all sorts of academic reasoning why you must have this or that queue this wide array of choices is going to confuse bug reporters and we'll get more and more issues filed in the wrong queues. I suggest to remove 5-dev and 6-dev and to replace x.y.z by "Development version". Cheers, Gerhard