Added a subtle border to the Toolstrip

Added a bit more separation between the Toolstrip and the Toolbar

src/FlightDisplay/FlightDisplayView.qml

@@ -407,7 +407,7 @@ QGCView {
             id:                 toolStrip
             anchors.leftMargin: ScreenTools.defaultFontPixelWidth
             anchors.left:       _panel.left
-            anchors.topMargin:  ScreenTools.toolbarHeight + _margins
+            anchors.topMargin:  ScreenTools.toolbarHeight + (_margins * 2)
             anchors.top:        _panel.top
             z:                  _panel.z + 4
             title:              qsTr("Fly")

src/QmlControls/ToolStrip.qml

@@ -19,6 +19,8 @@ Rectangle {
     width:      ScreenTools.isMobile ? ScreenTools.minTouchPixels : ScreenTools.defaultFontPixelWidth * 6
     height:     buttonStripColumn.height + (buttonStripColumn.anchors.margins * 2)
     radius:     _radius
+    border.width:   1
+    border.color:   qgcPal.globalTheme === QGCPalette.Light ? Qt.rgba(0,0,0,0.35) : Qt.rgba(1,1,1,0.35)
 
     property string title:              "Title"
     property alias  model:              repeater.model