Allow scroller to be adjusted by quill
Allow scroller to be adjusted by quill

Co-authored-by: Chris Svenningsen <711c73f64afdce07b7e38039a96d2224209e9a6c@carbonfive.com>
nrizzio/Signal-Desktop,nrizzio/Signal-Desktop,nrizzio/Signal-Desktop,nrizzio/Signal-Desktop