Use avatars consistent with superhero-ui/wallet instead of robohash.org

[davidyuk]

No description provided.

[mradkov]

This should be closed by #12

[davidyuk]

But actually, there are two kinds of avatars, shouldn't we handle them both?

[mradkov]

But actually, there are two kinds of avatars, shouldn't we handle them both?

You mean the custom ones as well?

[davidyuk]

I meant avatars generated by jdenticon: https://github.com/aeternity/superhero-ui/blob/5fff860514e10290cab555d2e0f35f23a732a740/src/components/Avatar.vue#L43-L55

But would be nice to support custom avatars as well.

[mradkov]

Do we get the .chain name at the time of signing the jwt token - in that case, we can resolve this easily by falling back to the jdenticon if there is not .chain name for this account.