Some improvements are available for the Firefly parts of Jim Bosch's intro-with-globular notebook used in the Lyon 2018 hands-on session and later demos.

• Define the Display so the proper URL is available before the IFrame cell, so that `lsp-demo.lsst.codes` need not be hardcoded into the notebook
• Dial down mask transparency via afw.display
• Show how the firefly_client.plot convenience module can upload the catalog and overlay on the images.