Stylesheet for individual poems and clusters in Leaves of Grass volumes tweaked

Ed noticed that, in the Emerson letter printed in the 1856 edition of Leaves, a signature mark was displaying as though it were part of the text. I had earlier altered the stylesheet that displays entire volumes of Leaves so that such marks are suppressed, but I had neglected to do the same in the stylesheet for the individual poem display. I have now added that code, and the mark no longer shows in the text display.

~ Brett