Autocompletion for Compound Widget

[Jacques Le Roux]

Hi,

With https://issues.apache.org/jira/browse/OFBIZ-7061 we introduced "Autocompletion 
for Compound Widget"
To be safe when introducing namespaces we duplicated the concerned XSD files.

Actually, as explained with an example by James Yong at https://issues.apache.org/jira/browse/OFBIZ-7061?focusedCommentId=15310518 we could easily 
remove these duplications by changing the files were the XSD are referenced.

If nobody disagree with that we will do that in a week. Please check the issue 
and ask questions if necessary.

Thanks

Jacques