Refresh tooltip text on loading a previewed app.
Merge pull request #825 from arjclark/fix.rose-edit-on-demand-tooltip

rose edit: fix load page tree hover-over following load-on-demand
rose suite-hook --shutdown: run with --kill --now

Now run `cylc shutdown` with `--kill --now`. This stops the suite
immediately. Otherwise, it may still be waiting for defunct jobs that
are in the submitted or running status.
Merge pull request #827 from matthewrmshin/rose-suite-hook-shutdown-kill-now

rose suite-hook --shutdown: run with --kill --now