Add a link to a network connection troubleshooting guide

CURA-2035

DiscoverUM3Action.qml

@@ -77,14 +77,21 @@ Cura.MachineAction
 
         Row
         {
+            id: contentRow
             width: parent.width
             spacing: UM.Theme.getSize("default_margin").width
+
+            Column
+            {
+                width: parent.width * 0.5
+                spacing: UM.Theme.getSize("default_margin").height
+
                 ScrollView
                 {
                     id: objectListContainer
                     frameVisible: true
-                width: parent.width * 0.5
+                    width: parent.width
-                height: base.height - parent.y
+                    height: base.height - contentRow.y - discoveryTip.height
 
                     Rectangle
                     {
@@ -142,6 +149,19 @@ Cura.MachineAction
                         }
                     }
                 }
+                Label
+                {
+                    id: discoveryTip
+                    anchors.left: parent.left
+                    anchors.right: parent.right
+                    wrapMode: Text.WordWrap
+                    //: Tips label
+                    //TODO: get actual link from webteam
+                    text: catalog.i18nc("@label", "If your Ultimaker 3 is not listed, read the <a href='%1'>Ultimaker 3 network troubleshooting guide</a>").arg("https://ultimaker.com/en/troubleshooting");
+                    onLinkActivated: Qt.openUrlExternally(link)
+                }
+
+            }
             Column
             {
                 width: parent.width * 0.5