Parent ScrollBars to their Flingables, not the StackView

This ensures they disappear when navigating to a new page

app/gui/AppView.qml

@@ -263,18 +263,5 @@ CenteredGridView {
         onAccepted: quitApp()
     }
 
-    ScrollBar.vertical: ScrollBar {
+    ScrollBar.vertical: ScrollBar {}
-        // Manually hide the scrollbar to prevent it from being drawn on top
-        // of the StreamSegue during the transition. It can sometimes get stuck
-        // there since we're not consistently pumping the event loop while
-        // starting the stream.
-        visible: activated
-
-        parent: appGrid.parent
-        anchors {
-            top: parent.top
-            right: parent.right
-            bottom: parent.bottom
-        }
-    }
 }

app/gui/PcView.qml

@@ -317,12 +317,5 @@ CenteredGridView {
         }
     }
 
-    ScrollBar.vertical: ScrollBar {
+    ScrollBar.vertical: ScrollBar {}
-        parent: pcGrid.parent
-        anchors {
-            top: parent.top
-            right: parent.right
-            bottom: parent.bottom
-        }
-    }
 }

app/gui/SettingsView.qml

@@ -16,12 +16,8 @@ Flickable {
     contentHeight: settingsColumn1.height > settingsColumn2.height ? settingsColumn1.height : settingsColumn2.height
 
     ScrollBar.vertical: ScrollBar {
-        parent: settingsPage.parent
         anchors {
-            top: settingsPage.top
+            left: parent.right
-            left: settingsPage.right
-            bottom: settingsPage.bottom
-
             leftMargin: -10
         }
     }