Data Review issue of edit summary is resolved.

**Data Review cancel/save edit summary issue is resolved:**

- Wherever necessary added default values in dropdown list.
- Some minor issues are also handled.

**After taking this pull what to test:**
- Go to ```File``` app --> ```Data Review```.
- Click on any row's ```Edit``` button. And without changing any of the field, click on ```Cancel``` button.
  - In this case editing fields should get hidden and ```Edit``` button should reappear without any edit-summary-alert.