app.build.js does not need explicit paths mapping...
app.build.js does not need explicit paths mapping...

... for jquery[-ui], provided it uses newest amber-cli,
which uses amber-dev ~0.2.0, which find which of the files
actually exists in amber config and use that one directly in config.js.

amber-smalltalk/grunt-init-amber,amber-smalltalk/grunt-init-amber