Change "Learn More" to point to scuttlebutt.nz
Change "Learn More" to point to scuttlebutt.nz

As per discussion at:
  %w2qoAYcVvEX9z1hhvbra1ypCtRprWV8LclgudQAdn3k=.sha256

This commit changes the default "Learn More" from electron to:
 https://scuttlebutt.nz/

Fixes #729 on Github.

ssbc/patchwork,ssbc/patchwork