Closes #284: display text zoomed in on the ES5

[severinrudie]

Pull Request checklist

• [ ] This PR includes thorough tests or an explanation of why it does not
• [X] This PR includes a CHANGELOG entry or does not need one
• [ ] The UI tests are passing after this PR (./gradlew connectedAmazonWebViewDebugAndroidTest)
• [ ] I have considered adding QA labels on the associated issue (not this PR; qa-ready or qa-denied)

I'm open to suggestions on alternate implementations.