If a post contains a link, create a preview of that link's target,
If a link points to a twitter-tweet, display that tweet
If a link points to a picture, display that picture
if a link points to a youtube-video, embedd it as a video
Create preview for links:
- If a post contains a link, create a preview of that link's target,
- If a link points to a twitter-tweet, display that tweet
- If a link points to a picture, display that picture
- if a link points to a youtube-video, embedd it as a video
Create preview for links: