Match design of CoursePress Theme in my Theme

This is a combination of 2 threads:
https://premium.wpmudev.org/forums/topic/csstheme-changes-for-courspress-pro-to-match-design-of-cp-theme#post-845910
https://premium.wpmudev.org/forums/topic/make-coursepress-pro-look-like-the-coursepress-theme

I am trying to make the layout for the CoursePress pages in my theme look like the CoursePress theme.

In the first post above, there are some .php files listed that need to be copied. What is the complete list of files that need to be copied from the CoursePress Theme?

I tried copying the listed files and received an error:

Fatal error: Call to undefined function coursepress_post_nav() in /nas/wp/www/staging/procenter/wp-content/themes/shoestrap-3/single-course.php on line 16

What other steps need to be taken to ensure my theme is able to 'reference' the new .php templates for the CoursePress pages?