Return an array of avatar urls in different sizes for Comments and Users

[rachelbaker]

• Add rest_get_avatars and deprecate rest_get_avatar
• Update Comment controller to use rest_get_avatars
• Update Users controller to use rest_get_avatars

[rachelbaker]

Fixes #1330 and #1290

We now return an array of avatar urls that are keyed on the image size. This approach is the result of a discussion with @rmccue via the #core-rest-api Slack channel earlier this week.

Example:

  "avatar_urls": {
    "24": "http://0.gravatar.com/avatar/06e92fdf4a9a63441dff65945114b47f?s=24&d=mm&r=g",
    "48": "http://0.gravatar.com/avatar/06e92fdf4a9a63441dff65945114b47f?s=48&d=mm&r=g",
    "96": "http://0.gravatar.com/avatar/06e92fdf4a9a63441dff65945114b47f?s=96&d=mm&r=g"
  },

[rachelbaker]

@danielbachhuber can I still use the uri format with the array type?

[danielbachhuber]

You're actually returning an object now, so it would be an object with specific properties

[rachelbaker]

[rachelbaker]

@WP-API/amigos #reviewmerge

[rachelbaker]

Hold off on a merge, I need to fix the schema.

[rachelbaker]

@WP-API/amigos #reviewmerge

[rmccue]

👍