#1075 Reset the view name after loading the background file

- The currently entered name from the view edit and new form is retained after when clicking the "Upload Image" or "Reset Image" button, what causes changes are made in the background view.
- Corrected ViewControllerUtils.getOrEmptyView.

src/com/serotonin/mango/util/ViewControllerUtils.java

@@ -3,6 +3,7 @@
 import com.serotonin.mango.Common;
 import com.serotonin.mango.view.View;
 import org.scada_lts.mango.service.ViewService;
+import org.scada_lts.serorepl.utils.StringUtils;
 import org.scada_lts.utils.HttpParameterUtils;
 
 import javax.servlet.http.HttpServletRequest;
@@ -18,6 +19,10 @@ public static View getOrEmptyView(HttpServletRequest request, ViewService viewSe
         if(view == null) {
             view = HttpParameterUtils.getObject("emptyView", request, View.class).orElseGet(View::new);
         }
+        String viewName = HttpParameterUtils.getValue("view.name", request, a -> a).orElse("");
+        if(!StringUtils.isEmpty(viewName)) {
+            view.setName(viewName);
+        }
         return view;
     }