DevGuide re-org adjustments

Hi Russ,

Great job on the changes. I tested importing the guide into Portal using the Asset Importer to make sure it would import and to see where header levels needed adjusting for chapters. I adjusted some of the header levels. I'll send you a screenshot of the table of contents after the import. Looks good!

I'll send Rich a pull request of this too, to get it merged into trunk.

Thanks,
Jim