Always show the sign in button
New control icon structure
Fix position of header drop down menus
Load username as soon as possible
Fix top bar item spacing
Merge branch 'master' of github.com:guardian/frontend into speed-up-username-display
Prevent double username insertion
Remove blocking script from header
Add a footer JavaScript partial
Instantly show username from cookie
Merge pull request #5249 from guardian/speed-up-username-display

Speed up username display in header