Fix device linking

res/layout/dialog_link_device_master_mode.xml

@@ -3,6 +3,7 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:background="@drawable/default_dialog_background_inset"
     android:gravity="center_horizontal"
     android:orientation="vertical"
@@ -12,6 +13,7 @@
     android:paddingBottom="@dimen/medium_spacing">
 
     <RelativeLayout
+        android:id="@+id/qrCodeImageViewContainer"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginTop="@dimen/small_spacing"
@@ -24,6 +26,15 @@
 
     </RelativeLayout>
 
+    <com.github.ybq.android.spinkit.SpinKitView
+        style="@style/SpinKitView.DoubleBounce"
+        android:id="@+id/spinner"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:visibility="gone"
+        app:SpinKit_Color="@color/text" />
+
     <TextView
         android:id="@+id/titleTextView"
         android:layout_width="wrap_content"
@@ -56,6 +67,7 @@
         android:visibility="gone" />
 
     <LinearLayout
+        android:id="@+id/buttonContainer"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginTop="@dimen/large_spacing"

res/layout/dialog_link_device_slave_mode.xml

@@ -18,7 +18,6 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginTop="8dp"
-        android:layout_centerInParent="true"
         app:SpinKit_Color="@color/text" />
 
     <TextView