Categories for the Course CPT

Closes #31
Categories were added and enabled to the course CPT.
To access the archive for this CPT use /course-archive/
To access a category use /course-category/{category}
Home page CPT's footer 3 columns output.

Closes #30
All done, please re-open or create a new ticket with an image for each
(the one on top of the title)
General fixes

Fixes #25
Fixes #23

- Utility nav search expand fix
- Logo jumps removed.