generate.legalnotice.link boolean
generate.legalnotice.link Write legalnotice to separate chunk and generate link?

## Description

If the value of generate.legalnotice.link is non-zero, the stylesheet:

- writes the contents of legalnotice to a separate HTML file

- inserts a hyperlink to the legalnotice file

- adds (in the HTML `head`) either a single `link` or element or multiple `link` elements (depending on the value of the html.head.legalnotice.link.multiple parameter), with the value or values derived from the html.head.legalnotice.link.types parameter

Otherwise, if generate.legalnotice.link is zero, legalnotice contents are rendered on the title page.