Modify Pages/terms2page.intro.m4
Replace header (<h2></h2>) tag, which was used for formatting, with
format tags.  Note: the tags should really go in the CSS.
Modify Pages/ui.intro.m4
Replace header (<h1></h1> etc) tags, which are used for formatting,
with format tags.  Note: formatting should be in the CSS.
Modify Pages/creditNotice.html.m4
Replace header tags that were used for formatting with format tags.
Note: formatting should go in CSS.  Fix header nesting, e.g., <h2>
under <h1> instead of <h3> under <h1>.
Modify Pages/termsArea.intro.m4
Replace header tags used for formatting with format tags.  Note:
format tags should be in CSS.
Modify Pages/termsImpl.intro.m4
Replace header tags used for formatting with format tags.  Note:
format tags should be in CSS.  Improve the English a bit ("that"
instead of "which").
Modify Pages/termsType.intro.m4
Replace header tags used for formatting with format tags.  Note:
format tags should be in CSS.