Implement a petition "quality" score algorithm

[fallen]

Implement a "score" to help organizations and people produce the best petition content possible.
That score should be able to give a mark to rate how well the petition is configured.
It should be able to give advice on how to improve the petition.
Ideas of points to check with this algorithm:

• has non-empty title
• non-empty text
• "twitter image" (og:image) present (important for OpenGraph cards when posting to social networks)
• OpenGraph description present
• usage of TLS or STARTTLS for newsletter settings
• not too low or too high number of signature target (so that progress bar looks nice)
• Petition content contains links to (or images from) URL in HTTPS and not HTTP
• other SEO/quality ideas?

[nils-van-zuijlen]

• Petition content contains links to (or images from) URL in HTTP and not HTTPS?

You mean that links and images should be in https?

[fallen]

Yes, I've edited the ticket to make that more clear.