Fungenerators Random Facts is now paid

It is not open-source, it is a paid service.

Add OpenSanctions

add kimiquotes to Personality

resolve #2951

Mailgun only provides a testing tier. When this tier's limit runs out, you'll need to pay to keep using it.

ref: https://www.mailgun.com/pricing/
```
Try us out! Get 5,000 free emails per month for 3 months, then only pay for what you send

Pay As You Grow
```

Moved:
- ImprovMX
- mail.gw
- mail.tm
- MailboxValidator

Removed Wegmans

Removed Wegmans (API no longer open to public)

The alternative site "collective API" is broken.

Removed Yahoo Weather (shutdown June 2021)

Improve description and change auth from No to apiKey

resolve #2975