A patch from Rong Nguyen for "Focus input(dropdown list) when click on label in widget form" https://issues.apache.org/jira/browse/OFBIZ-5594

The current widget form does not focus input(dropdown list) when a label is clicked on.

git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1583026 13f79535-47bb-0310-9956-ffa450edef68