[#1029] Pass Trac base URL as arg, not option, don't have default.
[#1029] Pass Trac base URL as arg, not option, don't have default.

leotrubach/sourceforge-allura,apache/allura,apache/allura,leotrubach/sourceforge-allura,Bitergia/allura,apache/incubator-allura,leotrubach/sourceforge-allura,heiths/allura,lym/allura-git,heiths/allura,heiths/allura,lym/allura-git,apache/allura,apache/incubator-allura,Bitergia/allura,apache/allura,heiths/allura,leotrubach/sourceforge-allura,Bitergia/allura,apache/incubator-allura,Bitergia/allura,lym/allura-git,apache/allura,lym/allura-git,lym/allura-git,heiths/allura,apache/incubator-allura,Bitergia/allura