Remove the assay name from the header of the functional assay subtiles.

[melissacline]

Right now, the leftmost column of the header is the name of the assay (corresponding to the label of the column in the spreadsheet), with the author's name/reference in the center and the result on the right. Remove the name of the assay, and move the author's name/reference into the leftmost position. So for example, the Findlay tile has "Findlay" in the leftmost column and "Findlay et al , 2018" in the center column; move "Findlay et al, 2018" into the leftmost column.