Improve trackpad fix

- Add it to remaining components
- Do not use Timer, as flickDeceleration from
  Flickable is more performant
- Add a setting option for it: useTrackpadFix

src/gui/Base/HFlickable.qml

@@ -4,6 +4,16 @@ import QtQuick 2.12
 import QtQuick.Controls 2.12
 
 Flickable {
+    id: flickable
     interactive: contentWidth > width || contentHeight > height
-    ScrollBar.vertical: ScrollBar {}
+    ScrollBar.vertical: ScrollBar {
+        visible: flickable.interactive
+    }
+
+
+    readonly property HTrackpadFix trackpadFix: HTrackpadFix {
+        flickable: flickable
+        width: flickable.width
+        height: flickable.height
+    }
 }