Reorganized the screen widget src folder so classes are more organized.

This commit might break some Groovy scripts. There seemed to be a lot of C&P widget import statements, but there were no widget classes being used in the script, so I removed them. I might have overlooked something though.

git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1652852 13f79535-47bb-0310-9956-ffa450edef68
140 files changed