Changed all the action buttons to either use primary or secondary button

CURA-5959

resources/qml/ActionPanel/OutputDevicesActionButton.qml

@@ -12,13 +12,12 @@ Item
 {
     id: widget
 
-    Cura.ActionButton
+    Cura.PrimaryButton
     {
         id: saveToButton
         height: parent.height
         fixedWidthMode: true
-        shadowEnabled: true
-        shadowColor: UM.Theme.getColor("primary_shadow")
+
         anchors
         {
             top: parent.top