[#7925] use some variables to clean up some repetition in the commit template
[#7925] use some variables to clean up some repetition in the commit template

apache/allura,heiths/allura,heiths/allura,apache/allura,lym/allura-git,lym/allura-git,heiths/allura,lym/allura-git,lym/allura-git,heiths/allura,apache/allura,lym/allura-git,apache/allura,heiths/allura,apache/allura