PDF Export: No Chapter or page titles in footers

[xolotl]

PDF exports currently only have Course titles in footers, which doesn't give sufficient context.

Ideally we'd have both Chapter (aka Part) and Page titles available for use on pages, so depending on design, the elements available for the following page would be:

1. College Orientation and Success Strategies = Course title
2. Chapter 2 Who am I and What are My Goals? = Chapter/Part title)
3. Setting and Reaching Goals = Page title)

https://courses.candelalearning.com/collegesuccess2x30master/chapter/setting-and-reaching-goals/

But in PDF export, only the Course title is currently available in every PDF page of the output