Create Cypress test for Level/class sections

## Summary
Create Cypress integration test for the batch page. Copy over an existing test in the `MADNet/cypress/integration/` folder and build on that.

## Page/Module
[Batch Page](https://makeadiff.in/madnet/#/shelters/154/projects/1/levels)

### Things to test
- Listing 
- Create new
- Edit existing
- Delete