Comment 2 for bug 1729805

I forgot to finish a line above. '- "job type" selector to print only' should read:

- "job type" selector to print only vectors, rasters, or both

This also allowed me to add back in compatibility with the original extension's behavior of adding strokes to items that didn't have any by way of a separate job type. This "compatibility mode" benefits from the newer text, tag, and CSS support I added. (It seemed like too much work and too cruel to do otherwise.)