Fix ordering of nodes on term page when "nodeorder" is on.

#5928 

After the change the order in the order page of the nodes matches the order of the results in the term page. For example, for the "Air" term we set the order to:
![selection_093](https://cloud.githubusercontent.com/assets/4497748/2775782/1ec93a18-caca-11e3-8f11-05ae2bd80690.png)

and in the term page for "Air" we get the right order:
![selection_094](https://cloud.githubusercontent.com/assets/4497748/2775796/4cab5ba0-caca-11e3-8b3f-ab1eb28940a5.png)
![selection_096](https://cloud.githubusercontent.com/assets/4497748/2775823/b5c6b9ea-caca-11e3-9bcc-6fc79a269612.png)