Second level navigation is now in HTML in the template.

At mobile breakpoint the nav is still javascript only (as it is a 'popup'), however it is 'hidden' in the html and then exposed.
Merge branch 'master' of github.com:guardian/frontend into hard-nav
Merge branch 'master' of github.com:guardian/frontend into hard-nav
Fix local nav position in IE
Remove legacy ab test rule for local nav positioning
Merge branch 'master' of github.com:guardian/frontend into hard-nav
Merge branch 'hard-nav' of github.com:guardian/frontend into hard-nav
Remove spdy code
Merge pull request #3321 from guardian/hard-nav

Second level navigation is now in HTML in the template.
Fix failing config test
Merge pull request #3336 from guardian/remove-spdy

Remove spdy code
Fix merge conflicts