NOJIRA Add a little JavaDoc to the context on Reference.

git-svn-id: https://source.sakaiproject.org/svn/kernel@134156 66ffb92e-73f9-0310-93c1-f5514f145a0a
KNL-1165 Improve error handling in ReEncryptPasswords.

This improves the error handling when properties aren't defined in the configuration and also allows the loading of the files to be configured through system properties.

git-svn-id: https://source.sakaiproject.org/svn/kernel@134160 66ffb92e-73f9-0310-93c1-f5514f145a0a
KNL-1166 Don't NPE in BasicContentTypeImageService#destroy() when running in tests.

git-svn-id: https://source.sakaiproject.org/svn/kernel@134169 66ffb92e-73f9-0310-93c1-f5514f145a0a