Remove double bottom spacing in panels & hide scrollbar in NScrollView if not necessary

Modules/Panels/Audio/AudioPanel.qml

@@ -241,10 +241,6 @@ SmartPanel {
               }
             }
           }
-
-          Item {
-            Layout.fillHeight: true
-          }
         }
       }
     }

Modules/Panels/Bluetooth/BluetoothPanel.qml

@@ -238,10 +238,6 @@ SmartPanel {
               }
             }
           }
-
-          Item {
-            Layout.fillHeight: true
-          }
         }
       }
     }

Modules/Panels/Calendar/CalendarPanel.qml

@@ -650,6 +650,7 @@ SmartPanel {
       Loader {
         id: weatherLoader
         active: Settings.data.location.weatherEnabled && Settings.data.location.showCalendarWeather
+        visible: active
         Layout.fillWidth: true
 
         sourceComponent: WeatherCard {