[bp/r48680][FIX] fixed auto toc link not working as per comment on ticket 4902. changed auto toc behavior to use innerText from headers instead of grabbing the HTML. Formatting is no longer carried into auto toc, but this prevents pulling in anchor headers and makes toc look more consistent overall

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48711 b456876b-0849-0410-b77d-98878d47e9d5