Show welcome page in marketplace window when not logged in

TODO: marketplace logo

CURA-6569

plugins/Toolbox/resources/qml/WelcomePage.qml

@@ -0,0 +1,53 @@
+// Copyright (c) 2018 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.7
+import QtQuick.Controls 2.1
+import QtQuick.Window 2.2
+
+import UM 1.3 as UM
+import Cura 1.1 as Cura
+
+Column
+{
+    id: welcomePage
+    spacing: UM.Theme.getSize("wide_margin").height
+    width: parent.width
+    height: childrenRect.height
+    anchors.centerIn: parent
+
+    Image
+    {
+        id: profileImage
+        fillMode: Image.PreserveAspectFit
+        source: "../images/logobot.svg"
+        anchors.horizontalCenter: parent.horizontalCenter
+        width: Math.round(parent.width / 4)
+    }
+
+    Label
+    {
+        id: welcomeTextLabel
+        text: catalog.i18nc("@description", "Get plugins and materials verified by Ultimaker")
+        width: Math.round(parent.width / 2)
+        font: UM.Theme.getFont("default")
+        color: UM.Theme.getColor("text")
+        verticalAlignment: Text.AlignVCenter
+        horizontalAlignment: Text.AlignHCenter
+        anchors.horizontalCenter: parent.horizontalCenter
+        wrapMode: Label.WordWrap
+        renderType: Text.NativeRendering
+    }
+
+    Cura.PrimaryButton
+    {
+        id: loginButton
+        width: UM.Theme.getSize("account_button").width
+        height: UM.Theme.getSize("account_button").height
+        anchors.horizontalCenter: parent.horizontalCenter
+        text: catalog.i18nc("@button", "Sign in")
+        onClicked: Cura.API.account.login()
+        fixedWidthMode: true
+    }
+}
+