SAK-25728 Copyright count wasn't correctly defined in properties file.

This was causing a NPE when loading the tool. I've fixed the trailing whitespace which was causing the values to be unable to be parsed into an integer and I've also fixed CopyrightManager so it doesn't blow up when null rights are passed to it.

git-svn-id: https://source.sakaiproject.org/svn/content/trunk@305978 66ffb92e-73f9-0310-93c1-f5514f145a0a