Provide a table of content in Advanced Help pages.

FGM 8e663f7c78 Apply i18n %!s(int64=14) %!d(string=hai) anos
translations 8e663f7c78 Apply i18n %!s(int64=14) %!d(string=hai) anos
ah_toc.css 52cf2f0181 TOC is now (un)foldable). Extra validation info %!s(int64=14) %!d(string=hai) anos
ah_toc.info d1334aaa46 Initial version of AH TOC: build a static table of contents. %!s(int64=14) %!d(string=hai) anos
ah_toc.install d1334aaa46 Initial version of AH TOC: build a static table of contents. %!s(int64=14) %!d(string=hai) anos
ah_toc.js 8e663f7c78 Apply i18n %!s(int64=14) %!d(string=hai) anos
ah_toc.module d1334aaa46 Initial version of AH TOC: build a static table of contents. %!s(int64=14) %!d(string=hai) anos