Point the repository URLs at their new owner

These moved from the Coffey-Labs org to jcoffey-dev, where they belong.
GitHub redirects a transferred repository, so nothing was broken by
leaving them -- but a source link that lands via a redirect is still
naming an owner that no longer holds the code, and the redirect only
lasts as long as nobody creates a repository of the same name in the
old place.

Only the seven repositories that actually moved are rewritten. Every
other Coffey-Labs URL is left alone: ihasmail, cairnobs and the rest
are still there.

src/App.tsx

@@ -26,7 +26,7 @@ import './App.css'
  * AGPL section 13: anyone playing this over a network is entitled to the
  * source of the version they are playing, so the offer sits on every screen.
  */
-const SOURCE_URL = 'https://github.com/Coffey-Labs/lemonade'
+const SOURCE_URL = 'https://github.com/jcoffey-dev/lemonade'
 
 /**
  * The way back out.