Statusbar now displays summary OK/Errors.
rosie.ws: basic `all_revs` test battery
Merge pull request #811 from arjclark/rose-edit-ok-status

rose edit: everything OK rule checker statusbar message
Merge pull request #812 from matthewrmshin/t.rosie-ws.all_revs

rosie.ws: basic `all_revs` test battery
Merge branch 'master' of github.com:metomi/rose into gh-pages