Revert "fix (experiments): disable screenshots experiment in release branch"
Revert "fix (experiments): disable screenshots experiment in release branch"

This reverts commit 635870067d5f6ee5a07b7b4c8b23a65f7f748956.

AdamHillier/activity-stream,rlr/activity-streams,rlr/activity-streams,AdamHillier/activity-stream,Mardak/activity-stream,rlr/activity-streams,sarracini/activity-stream,JaredKerim-Mozilla/activity-stream,JaredKerim-Mozilla/activity-stream,Mardak/activity-stream,mozilla/activity-streams,AdamHillier/activity-stream,rlr/activity-streams,mozilla/activity-stream,JaredKerim-Mozilla/activity-stream,Mardak/activity-stream,sarracini/activity-stream,JaredKerim-Mozilla/activity-stream,AdamHillier/activity-stream,sarracini/activity-stream,Mardak/activity-stream,mozilla/activity-streams,sarracini/activity-stream,mozilla/activity-stream,mozilla/activity-stream,mozilla/activity-stream