gridstack / gridstack.js / 500

68%

Pull #1064

travis-ci

add `jquery-ui.js` minimal need

* minimal subset we need (55k vs 248k), which is now part of `gridstack.all.js`
* just 1 include needed now in demos
* CDN use gridstack@latest

had to manually build download.jqueryui.com as the https://jqueryui.com/download/
is no longer working as for >2 months ago. Looks like ship is gone..
see https://github.com/jquery/download.jqueryui.com/issues/359

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