Update src/main/webapp/WEB-INF/view/inc/header.ftl

DNS pre-fetching for tiles subdomain, re-organized order of stylesheet link tags
Swapped URL for css on Google Code

Previous URL issued a 301 to current URL
Eliminated unnecessary inclusion of Google Code css
Changed order of tab items
Merge branch 'dev' of github.com:Canadensys/canadensys-explorer into dev
fixed some HTML issues (unclosed tag and wrong tag).