[8] picador CSS frontmatter folios not working

[mattretzer]

This is the file that gave me trouble, but in looking at older runs, it looks like it;'s just not working.:
https://www.dropbox.com/s/5w9zfp3yxiit1ts/9781250170583_MNU.docx?dl=0

When this rule is present:

section[data-type="preface"] {
  page: front; }

None of the frontmatter gets a folio in this .docx. To revert / nullify this rule I mocked up a one-off css:

section[data-type="preface"] {
  page: chapter;
  page-break-before: right;
  prince-page-group: start; }

Which rolls us back to the tor.css as a workaround, but doesn't apply lower-roman page number style; it's just numbering the frontmatter with decimal-type nums and restarting at main content.

[mattretzer]

Turns out the issue is with '@page front:left' & '@page front:right' definitions in the core_tor.css.. the picador css tries to override '@page front' definitions but needs to be more specific (address left & right) to override the 'content:normal' rules from above. I fixed this issue with a oneoff again but maybe we should patch this one permanently sooner rather than later.