Modifications to intro/outro for Listen

[tamarahills]

TBD

[HugoRomano]

Copying over the conversation from Slack:

For the Introduction

• Intro: “article title, published by host, on publish date"
• Ideally/if possible the publish date only includes the date, not the time.
• Skip individual comma separated sections if metadata not available.

For the Outro

• Nothing needed, the clients will add a delay.

[tamarahills]

Fixed by #151