refactor persistent header jQuery and adjust CSS animation
css animation imrpovements
speed up navigation animation by not animating the reg content. will try animating when loading less content at a time
TOC tweaks
Revert "TOC tweaks" as I inadvertantly added the .grunt directory

This reverts commit 2626412e194bab5d627604740c959e1239be0b8c.
Merge pull request #68 from ascott1/master

TOC/Persistent Nav Improvements