don't move indexes if we're moving an document's page

src/document/UBDocumentController.cpp

@@ -1451,7 +1451,8 @@ void UBDocumentTreeView::dropEvent(QDropEvent *event)
 
         docModel->setHighLighted(QModelIndex());
     }
-
+    else
+    {
         if(targetIsInTrash)
         {
             if (!UBApplication::mainWindow->yesNoQuestion(tr("Remove Item"), tr("Are you sure you want to remove the selected item(s) ?")))
@@ -1461,6 +1462,7 @@ void UBDocumentTreeView::dropEvent(QDropEvent *event)
         }else{
             docModel->moveIndexes(dropIndex, targetIndex);
         }
+    }
 
     expand(proxy->mapFromSource(targetIndex));