For consistency add underscores too all tex/pdf filenames

For the English part
Rewrite highlight and move files

Rewrite part of highlight
Ignore empty cells
Improve deselect function

Move common files to more general place
Add header image
Add English routenet html and move Dutch routenet

Fix link to Detector testen
Fix links to common files
Add initial attempt at makefile for gh-pages
Correct links to pdfs