THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Andrea Del Bene TODO add explanation what has changed
Use JQuery 3.x by default Jira server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key WICKET-6596
JQuery 2.x is not maintained anymore by jQuery team. Wicket will use by default latest available 3.x version.