Updates to lander - moves to video header and flowplayer embeds
Swaps out video for gif header, reverts back to vimeo embeds
Adds mobile header - single animation
Revert "Adds mobile header - single animation"

This reverts commit 4010b31d620d68f65468a078d3da44016f6a4812.
Revert "Swaps out video for gif header, reverts back to vimeo embeds"

This reverts commit 51316680994cfaeca252d2461d243396a0d26ef4.
Tweaks to fit front page on single screen