textmode: no previews in textmore for now

Ideally these would just be angle bracket quotes or something. would be
cool.

src/timeline.rs

@@ -96,7 +96,8 @@ pub fn timeline_view(ui: &mut egui::Ui, app: &mut Damus, timeline: usize) {
                         return 0;
                     };
 
-                    let note_ui = ui::Note::new(app, &note);
+                    let textmode = app.textmode;
+                    let note_ui = ui::Note::new(app, &note).note_previews(!textmode);
                     ui.add(note_ui);
                     ui.add(egui::Separator::default().spacing(0.0));