Change central message in dialog when server is not reachable

app/src/main/res/layout/dialog_server_unreachable.xml

@@ -6,6 +6,10 @@
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:layout_marginStart="24dp"
+        android:layout_marginTop="24dp"
+        android:layout_marginBottom="4dp"
+        android:layout_marginEnd="24dp"
         android:gravity="center"
-        android:text="aaaaaa" />
+        android:text="@string/server_unreachable_dialog_summary" />
 </LinearLayout>