[Feature request] Further UI enhancements

[RowanDDR]

New 0.88 UI is fantastic! Thanks so much! After using it for a little while, I have some small ideas for improvement:

• Add a header when you are inside a menu (with perhaps 1 line of padding above it)
• Add a back option to the bottom (I know you can press the physical "back" button on the remote but its nice to have a menu option here as well)

Mockup:

Hope you think its a good idea! :)