Revert "Don't pass referrer header to twitter when sharing"
Revert "Don't pass referrer header to twitter when sharing"

This reverts commit f3d2faf04a40cc231be920ec033d2644d6a35e39.

This link gets picked up by js anyway. We're going to handle it by making the
embed link shorter.

EFForg/action-center-platform,EFForg/action-center-platform,EFForg/action-center-platform,EFForg/action-center-platform