Change Details

###Background: This work is useful because a) it reports on a useful data point that helps determine quality of articles, and b) once we do goal-setting work, then organizers can set goals based on the number of references added. ###Acceptance Criteria: * Given that a user is on the Contributions tab in EventDetails, ** And they are in the Edits view or Editors view (when available), *** They should data on the references added/removed in the following format: **** Top summary of Contributions tab with the title "References Changed" ***** This should be placed after Bytes changes **** Table view of Contributions tab with the title "References" ***** This should be placed after Bytes ###Visual example: **The current Contributions tab (without references):** {F71017340}