Sample page doesn't render without internet connection

[Jakeeyturner]

Description

When a user selects a sample, the webview will fail to render if they have no internet connection. This is because we attempt to fetch the samples README.

const response: any = await Axios.get(options.sample.readme);

Expected Behavior

We should either throw an error after a certain timeout value, or we should render the page without the README and let the user know we were unable to retrieve it.

Actual Behavior

Sample webview fails to render.

Possible Fix

On the Axios.get() request, we could pass a timeout value as one of the options.

Steps to Reproduce

1. Open up Home page
2. Disconnect from internet
3. Click on FabCar or Commercial Paper sample

Existing issues

• Stack Overflow issues
• GitHub Issues

Log File

Your Environment

• IBM Blockchain Platform Extension Version:
• Visual Studio Code version:
• Environment name and version (e.g. Node.js v8.12.0, npm v6.4.1):
• Operating System and version:
• Link to your project: