Vid 2044

Adding bucky profiling for message wall. Three main areas are MessageWall JS, MessageWall ajax requests, and MiniEditor handling of message wall. That's how I broke it up in the graphs anyway. http://graph-s3.wikia-prod/grafana/#/dashboard/db/Liz%20Dash%20Wall. 

Note, selenium tests are failing when run against my devbox, but they are failing on both dev branch and this branch, so let's re-run them on preview (or sandbox). 
should var element be declared at the top of this function?