Add more info to the spec about CSS and start documenting status of each segment.
Add more info to the spec about CSS and start documenting status of each segment.

git-svn-id: 07e90cf55c51d05f6e47e58d22f17c514a1aa358@23 48356398-32a2-884e-a903-53898d9a118a

r-kovalenko/htmlpurifier,bartbutler/htmlpurifier,ezyang/htmlpurifier,stefanotorresi/htmlpurifier,Janson-Leung/htmlpurifier,Janson-Leung/htmlpurifier,bartbutler/htmlpurifier,bfroehle/htmlpurifier,Janson-Leung/htmlpurifier,ezyang/htmlpurifier,bfroehle/htmlpurifier,stefanotorresi/htmlpurifier,Masterjoa/HTMLPurifier-standalone,r-kovalenko/htmlpurifier,r-kovalenko/htmlpurifier,stefanotorresi/htmlpurifier,bfroehle/htmlpurifier,Janson-Leung/htmlpurifier,stefanotorresi/htmlpurifier,ezyang/htmlpurifier,bartbutler/htmlpurifier,r-kovalenko/htmlpurifier,Masterjoa/HTMLPurifier-standalone,bartbutler/htmlpurifier,ezyang/htmlpurifier