Docs: removed plugin:true, was causing double loading of plugin
Docs: Updated Video Census description
Docs: fixed content on comscore page
Docs: updated Nielsen combined desc
Docs: Fixed layout of NielsenCombined
Docs: Update ad metadata example
Docs: Updated description and layout of siteCatalyist demo
Docs: fixed chapters edit display ( still need to login to edit )
Docs: Updated chpaters description