My Account improvements.

Invoice print page css improvements.
Local.xml minor fix.
Added product image in My Account Review Details Page.
Account.less minor fix.
Overlay Login and js improvements.

Local.xml
	Loads by default: js/lib/frontend.js
	Loads by default: js/lib/jquery-tools/overlay.js
	Loads by default: js/lib/jquery-tools/toolbox.expose.js
	Loads template/customer/form/mini.login.phtml before body end

Minor improvements in head.phtml.
Overlay css definition in css/page.less.
Login overlay in global.js.
Minor fix in js/lib/cloud-zoom.js.
General CSS improvements

Footer css improvements.
Header css improvements.
Nav css improvements.
Minor fixes.
ChangeLog.