## What changes were proposed in this pull request?

1.The title style about field is error.
fix before:
![before](https://cloud.githubusercontent.com/assets/26266482/26661987/a7bed018-46b3-11e7-8a54-a5152d2df0f4.png)

fix after:
![fix](https://cloud.githubusercontent.com/assets/26266482/26662000/ba6cc814-46b3-11e7-8f33-cfd4cc2c60fe.png)

![fix1](https://cloud.githubusercontent.com/assets/26266482/26662080/3c732e3e-46b4-11e7-8768-20b5a6aeadcb.png)

executor-page style:
![executor_page](https://cloud.githubusercontent.com/assets/26266482/26662384/167cbd10-46b6-11e7-9e07-bf391dbc6e08.png)

2.Title text description, 'the application' should be changed to 'this application'.

3.Analysis of code:
 $('#history-summary [data-toggle="tooltip"]').tooltip();
The id of 'history-summary' is not there. We only contain id of 'history-summary-table'.

## How was this patch tested?

manual tests

Please review http://spark.apache.org/contributing.html before opening a pull request.

Author: guoxiaolong <guo.xiaolong1@zte.com.cn>
Author: 郭小龙 10207633 <guo.xiaolong1@zte.com.cn>
Author: guoxiaolongzte <guo.xiaolong1@zte.com.cn>

Closes #18170 from guoxiaolongzte/SPARK-20942.

(cherry picked from commit 625cebfde632361122e0db3452c4cc38147f696f)
Signed-off-by: Sean Owen <sowen@cloudera.com>