The algorithm can't work, it just orders all nodes in front of the 'nodeToMove' until the 'targetNodeName' is in front. But that can't work in most cases (at least when there is more than three nodes as in the existing textcase).

I created a patch with test cases, all these should work properly (ContentUtilTest.java.patch).
While testing the orderAfter i tested the orderBefore too.
The orderBefore works fine, still adding a patch here, so the test cases (no cases there yet) can be added&tested at the same time (ContentUtilTest.java.patch2).