#702 Delete unused/unnecessary code
#702 Delete unused/unnecessary code

- Replaced video with screenshots
- Updated texts

literacyapp-org/literacyapp-web,elimu-ai/webapp,literacyapp-org/literacyapp-web,literacyapp-org/literacyapp-web,elimu-ai/webapp,literacyapp-org/literacyapp-web,elimu-ai/webapp,elimu-ai/webapp