Moving logo from header

Added thumbnail captions to images

- added course page set with third level nav concepts
- added a set of new basic pages to test design
- added console page
- fixed unorganised header tags
- added colours stylesheet for easy theming
- changed theme to Otago Polytechnic
- fixed mobile issue with icons
- finished pedagogical icon set
- styled tables
- added third level nav solutions

New Pages, Change to header tags, page layout and menu