[GNC] Print Report does not "page" properly

[Nith Valley Organics]

> 
> It's due to a buggy library (someone else's software used within GnuCash)
> that has been difficult to update or replace.

Sadly, it isn’t a bug.  The standard makes it optional whether HTML renderers do the right thing around breaking pages at paragraph breaks or row breaks in tables (there is a directive in the HTML that the renderer is free to ignore).  And so, some renderers ignore it.  It may be fixed in a newer version of webkit, as noted.  I haven’t needed this in some years; it was a problem when we were generating print invoices (a special case of a report) for one particular customer who tended to order enough different things in one order that it flowed onto multiple pages.  When we stopped having that customer the problem (and others not related to GnuCash) went away.