Add new masterclass example to the landing page

[EdwardMoyse]

A lot of features have been added recently, related to masterclasses. For masterclasses it would be good to add a new example to the landing page with simplified UI (i.e. a reduced Menu bar at the bottom).

[rx18-eng]

Hey @EdwardMoyse great to hear that we are finally including this in the ui :) . I will surely work on this .

[EdwardMoyse]

Yeah sorry it took so long, but I finally found a bit of time to work on Phoenix again!

[rx18-eng]

No worries I will start working on this and my new ideas from today and will also work on all the open issue regarding release 4.1.0