Stunner based editors support for use on mobile devices.

Checklist:

• Webpage for mobile client
  • viewport - optimize width / scaling
  • CSS overscoll-behavior
• Stunner (Canvas)
  • Core 
    • Canvas -.CSS touch-action 
    • Support for pointer events (mouse/touch)
    • Support for gesttures (multi-touch)
  • Components
    • Palette
    • Canvas Controls
      • Location
      • Selection
    • Toolbox
    • Mediators
• Forms