WizardLanguage: introduce LanguageButton component, replace the btn

wizard/WizardHome.qml

@@ -30,7 +30,6 @@ import QtQuick 2.9
 import QtQuick.Dialogs 1.2
 import QtQuick.Layouts 1.2
 import QtQuick.Controls 2.0
-import FontAwesome 1.0
 import moneroComponents.NetworkType 1.0
 
 import "../components" as MoneroComponents
@@ -68,32 +67,8 @@ Rectangle {
                     subtitle: ""
                 }
 
-                RowLayout {
+                MoneroComponents.LanguageButton {
                     Layout.bottomMargin: 8
-                    opacity: mouseArea.containsMouse ? 1 : 0.85
-                    spacing: 10
-
-                    MoneroComponents.Label {
-                        Layout.bottomMargin: 5
-                        fontColor: MoneroComponents.Style.defaultFontColor
-                        fontFamily: FontAwesome.fontFamilySolid
-                        fontSize: 26
-                        styleName: "Solid"
-                        text: FontAwesome.language
-                    }
-
-                    MoneroComponents.TextPlain {
-                        font.pixelSize: 14
-                        text: wizard.language_language
-                    }
-
-                    MouseArea {
-                        id: mouseArea
-                        anchors.fill: parent
-                        cursorShape: Qt.PointingHandCursor
-                        hoverEnabled: true
-                        onClicked: appWindow.toggleLanguageView()
-                    }
                 }
             }