New footers and headers added to index.html and Gr4 LL Ch 1
New margin kids images for Ie* (resized)
Added GA tracking code to both footers
GA tracking code moved to headers, where it belongs
Reinstated the DOCTYPE tag. This fixes the download icon bug.
added DOCTYPE tag to new headers. This should fix much of IE issues.
added target=blank to poster and concept map image links
Header, footer fixes and hacks for IE8 and below
Merge branch 'qa-testing' into gh-pages

Conflicts:
	Grade4/02-matter-and-materials/chapter1.html
	teachers-parents.html