Optimised images, tweaks for devsite

Remove the script tag from the google_header
Merge branch 'master' of https://github.com/PaulKinlan/WebDocs

Conflicts:
	src/site/the-essentials/introduction-to-media/images/images/backgroundMultiple.png
	src/site/the-essentials/introduction-to-media/images/images/borderRadiusCircle.png
	src/site/the-essentials/introduction-to-media/images/images/borderRadiusEllipse.png
	src/site/the-essentials/introduction-to-media/images/images/borderRadiusLozenge.png
	src/site/the-essentials/introduction-to-media/images/images/canary.png
	src/site/the-essentials/introduction-to-media/images/images/chrome.png
	src/site/the-essentials/introduction-to-media/images/images/chromeLogo.png
	src/site/the-essentials/introduction-to-media/images/images/cssSpriteSheet.png
	src/site/the-essentials/introduction-to-media/images/images/fontAwesome.png
	src/site/the-essentials/multi-device-layouts/layout-patterns/images/tabbar-alt-2.png
Merge pull request #73 from ianbarber/master

Optimised images, tweaks for devsite