hide download button on homepage for iOS users

iOS specific firefox-promo banner styling

tidy up
Merge pull request #830 from alexgibson/iosdetect

hide download button on homepage for iOS users bug 767985
Bug 869110 Fix Firefox-check logic on update page
Merge pull request #832 from sgarrity/bug-869110-update-logic

Bug 869110 Fix Firefox-check logic on update page
Revert "[bug 859564] University Ambassadors form."

This reverts commit fa5da4b78c68ab05d66ecf163c0f5ed2c821edbb.
Fix bug 866299 - add MWC wrapup video to partners page

With Flash fallback for older browsers
Bug 835506: Add /b/ passthrough for facebook download tab.