Replace usage of controls label with our custom label

This prevents copy pasting a bunch of parameters that we set by default

plugins/UM3NetworkPrinting/resources/qml/MonitorBuildplateConfiguration.qml

@@ -3,7 +3,7 @@
 
 import QtQuick 2.2
 import QtQuick.Controls 2.0
-import UM 1.3 as UM
+import UM 1.5 as UM
 
 /**
  * This component comprises a buildplate icon and the buildplate name. It is
@@ -57,19 +57,15 @@ Item
             }
         }
 
-        Label
+        UM.Label
         {
             id: buildplateLabel
-            color: UM.Theme.getColor("text")
             elide: Text.ElideRight
-            font: UM.Theme.getFont("default") // 12pt, regular
             text: buildplate ? buildplate : ""
             visible: text !== ""
 
             // FIXED-LINE-HEIGHT:
             height: 18 * screenScaleFactor // TODO: Theme!
-            verticalAlignment: Text.AlignVCenter
-            renderType: Text.NativeRendering
         }
     }
 }