[bug 729329] Add Sync animation to firefox/sync
[bug 984970] Create GA experiment on /firefox/new/ for funnelcake testing
Bug 869516 - base styles for older versions of IE

Place CSS in extrahead block for variety of Fx pages.
Merge pull request #1808 from mozilla/bug-869516-base-styles-for-oldIE

Bug 869516 - base styles for older versions of IE
Merge pull request #1853 from alexgibson/bug-729329-add-sync-page-animation

[bug 729329] Add Sync animation to firefox/sync
Merge pull request #1868 from alexgibson/bug-984970-create-ga-experiment-for-funnelcake-testing

[bug 984970] Create GA experiment on /firefox/new/ for funnelcake testing
Bug 995378 - Copy changes for www.mozilla.org/gigabit