If a user is zero rated and loading content from a web view we should make sure they don't get charged by accident.
There are two cases:
1. The webview is loading non zero rated content (like analytics) in the background.
2. A user taps an external link.
In case 1) we should silently prevent the content from loading.
In case 2) we should show a confirmation dialog and allow the user to decide whether to open the content in their web browser.
This needs confirmation dialog text from or .