added display of a notification that the server is busy installing third-party software

- refactoring doInstallAction functions

client/ui/qml/Pages/Protocols/PageProtoCloak.qml

@@ -14,6 +14,7 @@ PageProtocolBase {
     enabled: logic.pageEnabled
     BackButton {
         id: back
+        enabled: logic.pageEnabled
     }
 
     Caption {
@@ -110,12 +111,20 @@ PageProtocolBase {
         }
     }
 
+    LabelType {
+        id: label_server_busy
+        horizontalAlignment: Text.AlignHCenter
+        Layout.maximumWidth: parent.width
+        Layout.fillWidth: true
+        visible: logic.labelServerBusyVisible
+        text: logic.labelServerBusyText
+    }
+
     LabelType {
         id: label_proto_cloak_info
-        x: 30
-        anchors.bottom: pb_save.top
-        anchors.bottomMargin: 10
-        width: parent.width - 40
+        horizontalAlignment: Text.AlignHCenter
+        Layout.maximumWidth: parent.width
+        Layout.fillWidth: true
         visible: logic.labelInfoVisible
         text: logic.labelInfoText
     }
@@ -146,6 +155,19 @@ PageProtocolBase {
             }
         }
         visible: logic.progressBarResetVisible
+        LabelType {
+            anchors.left: parent.left
+            anchors.right: parent.right
+            anchors.verticalCenter: parent.verticalCenter
+            text: logic.progressBarText
+            horizontalAlignment: Text.AlignHCenter
+            verticalAlignment: Text.AlignVCenter
+            font.family: "Lato"
+            font.styleName: "normal"
+            font.pixelSize: 16
+            color: "#D4D4D4"
+            visible: logic.progressBarTextVisible
+        }
     }
     BlueButtonType {
         id: pb_save