FORMATTING: Add some final newlines in a few files.

git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1482066 13f79535-47bb-0310-9956-ffa450edef68
OPTIMIZE: join() now calls UtilValidate.isEmpty().

git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1482067 13f79535-47bb-0310-9956-ffa450edef68