third-party pronoun.is which we use within speaker bio(s) is currently down

[chriscoffee]

We currently link to an external site pronoun.is that's been running on Heroku. It could well be either that the developer got caught out by heroku deleting inactive/free tier accounts or simply has become unmaintained. There's an issue about it here witch-house/pronoun.is#147

We could either remove the references or find an alternative.

The main change needs to be made to the theme here https://github.com/search?q=repo%3Adevopsdays%2Fdevopsdays-web+pronoun.is+path%3Athemes%2F&type=code

However, there are a number of other changes that need to be made in order to make it backwards compatible, see https://github.com/search?q=repo%3Adevopsdays%2Fdevopsdays-web%20pronoun.is&type=code

Further to this, it also doesn't look like it exists in the reference.md so could potentially just be deprecated

devopsdays-web/themes/devopsdays-theme/reference.md

Lines 293 to 307 in 0ae328c

	### Speaker Page Fields
	Pages of the type `speaker` have a few additional frontmatter elements available to them, in addition to the general ones mentioned above.
	| Field Name | Required | Description | Example |
	|------------|----------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------|
	| `website` | No | The website for the speaker. | "https://www.mattstratton.io" |
	| `twitter` | No | Speaker's Twitter username, without the @. | "mattstratton" |
	| `facebook` | No | Speaker's Facebook URL | "https://www.facebook.com/matt.stratton" |
	| `linkedin` | No | Speaker's LinkedIn URL | "https://www.linkedin.com/in/mattstratton/" |
	| `github` | No | Speakers' GitHub username. | "mattstratton" |
	| `gitlab` | No | Speakers' GitLab username. | "mattstratton" |
	| `twitch` | No | Speakers' Twitch username. | "mattstratton" |
	| `mastodon` | No | Speakers' Mastodon URL username. | "https://hachyderm.io/@mattstratton" |
	| `image` | No | The image for the speaker. This image is relative to the `static/events/YYYY-CITY/speakers` directory. It can be either .png or .jpg. It is recommended to be 600px square. | "matt-stratton.jpg" |