Made Spring reload messages from the classpath (by default every 5
seconds). This will mean messages can be added/modified without
restarting Tomcat if you have JRebel installed, and as long as you have
done a mvn jrebel:generate (need to redo after mvn clean).
Merge pull request #39 from ORCID/dev-reloadMessagesWithJrebel

Made Spring reload messages from the classpath