Add nested documents; adjust main padding

+ don’t use .pulled grids everywhere
+ add .bar class for generic padded strips
+ remove OSLC home link
+ add classes and markup for nested documents (e.g. Legal agreements)
+ break _scaffolding into smaller pieces
+ remove .relaxed grid classes. You never use it.
+ alias “pulled” with “.nested” for grid rows
+ changed _main markup requires a change to Bartender (to use #listing)
+ Expose OSLC compactElements function for use elsewhere
+ Add compactor function to the end of the Dendogram script
+ Get most of the body content of a WPA into a sample page

related to issue #22