Add Libravatar support

[jaschaurbach]

Iwant to ask if there is any chance to get the same functionality for Libravatar – which works basically the same as Gravatar but with better hashing of the email. It uses the same URL structure as Gravatar for avatars and the same lookup mechanisms (as far as I can see)

I would love to use these avatars as well with your plugin. At the moment I van either use your plugin and Gravatar OR Libravatar and get no caching at all.

From an UI point of view I would suggest to just change the wording of the checkbox (German Example):

[mundschenk-at]

That's not a good consent form unfortunately, as I might consent to one but not the other. We could do this with a site admin setting on the backend, but then it would be either-or and it might be good to have both providers on a site.

[mundschenk-at]

Hi @jaschaurbach have you had any thoughts on what a good UX could be if we want to allow separate consent for Gravatar and Libravatar?

[jaschaurbach]

The only other solution I could thing about (this is a quick and dirty mockup!) would be to put two checkboxes near the E-Mail field (as both services look via E-Mail)

UI Design is really hell of a thing and I start to admire UI-Designers even more...