Removed the second definition of 'commons-jxpath-version' inside the parent pom. Also added back the removed version properties inside the parent pom through the previous commit as they're used by the karaf features (my bad).

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1428172 13f79535-47bb-0310-9956-ffa450edef68