CAS-1302: Allow the ResourceBundleMessageSource to use UTF-8 encoding explicitly.
CAS-1302: Applied the same fix over to the mgmt webapp.
CAS-1302: Switched to the reloadable version of the message bundle src, fixed utf-8 issues with the french bundle.
Merge pull request #237 from Unicon/CAS-1302

CAS-1302: Allow the ResourceBundleMessageSource to use UTF-8