optimize & bugfix:

1. 修复一个导出excel后urls和查询结果数据不一致的bug
2. 优化提示信息：当选中https数据而未勾选证书查询时，提示需要先勾选证书查询才能搜索对应证书
fixes #94

src/main/java/org/fofaviewer/main/MainApp.java

@@ -7,7 +7,7 @@
 import org.fofaviewer.controllers.MainController;
 
 public class MainApp extends Application {
-    private final String version = "1.1.7";
+    private final String version = "1.1.8";
 
     @Override
     public void start(Stage stage) throws Exception {