doc: add make help to all Makefiles and fix 2 Makefiles Use automatic help generator for help target that extracts help text from makefile comments. Reordered a number of targets to use grouping mechanism in help generator. A couple of multiple target rules had to be split because: target1 target2: ... ## help comment doesn't work with the help generator. In locale Makefile, the TEMPLATES variable was not set so changes to the html files in the templates would not trigger regeneration of the roundup.pot template. In doc Makefile, made admin_help.html generate the file rather than putting it into admin_help.py. Verified that the file shows up at end of admin_guide.html. In www makefile, fixed docs link generation.