New Bangle.js 2 menu system

Hi!

I've been experimenting with a new look and feel for the built-in menus. I'm interested to see what you think...

https://www.espruino.com/ide/?emulator&upload&gist=0aac0c7a020913a0f162571d9d3b1ee6

Click the above then choose 'Bangle.js 2' as the emulator. You could also just go to:

https://www.espruino.com/ide/?gist=0aac0c7a020913a0f162571d9d3b1ee6

Choose 'RAM' and upload it to your Bangle.js 2 for testing yourself.

• You now just use the touchscreen for navigation a bit like the launcher.
  
• Tapping on the menu title or top-left (or the button) moves you back - other methods including a swipe could maybe be configurable later.
  
• Menu items automatically wrap
  
• true/false menu items are just a radio button
  
• multi-choice items pop up their own menu
  
• numbers pop up a menu where you drag up and down and tap to select
  
  

Any thoughts? I feel like this will probably improve the look of Bangle.js apps a lot.