Add the initial files and patch the existing ones...
Change to chart.html to match the colour of the axes to the current colour of the text (for colourChanger purposes).
WHITESPACE ONLY
Fixes for IE header/footer filter, glossary term and thumbnail navigator
Also, on change, mark all pages for rebuild and rebuild current page
Make hangman graphic blue to help with accessibility and colourChanger
Change to only require chart and textDrawing to be redrawn on coulour change
Changes to make drag-drop labelling work
Merge branch 'feature/colour_changer' into develop