Switched Admin client to use avatars returned by the member API (#2373)

- Admin used a helper to generate Gravatar URLs for members
- This change switches to using the `avatar_image` returned by the Member API
- The helper predates the existence of `member.avatar_image`, and is no longer required

ghost/admin/.lint-todo

@@ -1087,3 +1087,4 @@ add|ember-template-lint|no-action|4|11|4|11|831dd12209c22868d0614c65417281fda799
 add|ember-template-lint|require-valid-alt-text|3|44|3|44|a7f0566c430150bae4153e0dfb489a218bdeb8a4|1652054400000|1662422400000|1665014400000|lib/koenig-editor/addon/components/koenig-card-embed/nft.hbs
 add|ember-template-lint|require-valid-alt-text|8|20|8|20|9d0c591086dc9139ff38a7b385c3367a83438786|1652054400000|1662422400000|1665014400000|lib/koenig-editor/addon/components/koenig-card-embed/nft.hbs
 add|ember-template-lint|require-input-label|10|12|10|12|8c3c0ea315ff4da828363989a45fa11256a78796|1652054400000|1662422400000|1665014400000|lib/koenig-editor/addon/components/koenig-card-image/selector-tenor.hbs
+remove|ember-template-lint|require-valid-alt-text|5|4|5|4|527936d4c6b3d34855a99669f0b8ae690094bc8e|1652054400000|1662422400000|1665014400000|app/components/gh-member-avatar.hbs

ghost/admin/app/components/gh-member-avatar.hbs

@@ -2,5 +2,5 @@
     <div class="gh-member-initials flex items-center justify-center br-100 {{@containerClass}}" style={{this.backgroundStyle}}>
         <span class="gh-member-avatar-label {{or @sizeClass "gh-member-list-avatar"}}">{{this.initials}}</span>
     </div>
-    <img class="gh-member-avatar-image" src={{gravatar @member.email size=180}} />
-</figure>
+    <img class="gh-member-avatar-image" src="{{@member.avatarImage}}" alt="{{or @member.name @member.email}}" />
+</figure>

ghost/admin/app/helpers/gravatar.js

@@ -1,22 +0,0 @@
-import Helper from '@ember/component/helper';
-import classic from 'ember-classic-decorator';
-import md5 from 'blueimp-md5';
-import {isEmpty} from '@ember/utils';
-import {inject as service} from '@ember/service';
-
-@classic
-export default class Gravatar extends Helper {
-    @service config;
-
-    compute([email], {size = 180, d = 'blank'}/*, hash*/) {
-        if (!this.get('config.useGravatar')) {
-            return;
-        }
-
-        if (!email || isEmpty(email)) {
-            return;
-        }
-
-        return `https://www.gravatar.com/avatar/${md5(email)}?s=${size}&d=${d}`;
-    }
-}

ghost/admin/app/models/member.js

@@ -19,6 +19,7 @@ export default Model.extend(ValidationEngine, {
     emailCount: attr('number', {defaultValue: 0}),
     emailOpenedCount: attr('number', {defaultValue: 0}),
     emailOpenRate: attr('number'),
+    avatarImage: attr('string'),
 
     products: attr('member-product'),
     newsletters: hasMany('newsletter', {embedded: 'always', async: false}),