Add playlist widget to elapsed time button popover

css/styles.css

@@ -22,6 +22,10 @@ radio {
   min-width: 17px;
   min-height: 17px;
 }
+/* Adwaita is missing osd ListBox */
+.osd list {
+  background: none;
+}
 .osd .playercontrols {
   -gtk-icon-size: 24px;
 }
@@ -70,6 +74,10 @@ radio {
   font-weight: 600;
   font-variant-numeric: tabular-nums;
 }
+.popoverbutton {
+  min-width: 24px;
+  min-height: 24px;
+}
 
 /* Position Scale */
 .positionscale {