Allowed Editor and Author roles to see email options when publishing

no issue

- there are no restrictions on Editor/Author emailing on the API side
- removed `user.canEmail` computed property as it's only contributors that don't have publish/email permissions and they aren't shown the publishing flow anyway

ghost/admin/app/models/user.js

@@ -54,8 +54,6 @@ export default BaseModel.extend(ValidationEngine, {
     isAdmin: or('isOwnerOnly', 'isAdminOnly'),
     isAuthorOrContributor: or('isAuthor', 'isContributor'),
 
-    canEmail: or('isAdmin', 'isEditor'),
-
     isLoggedIn: computed('id', 'session.user.id', function () {
         return this.id === this.get('session.user.id');
     }),

ghost/admin/app/utils/publish-options.js

@@ -108,7 +108,7 @@ export default class PublishOptions {
 
     // publish type dropdown is not shown at all
     get emailUnavailable() {
-        return this.post.isPage || this.post.email || !this.user.canEmail || this.emailDisabledInSettings;
+        return this.post.isPage || this.post.email || this.emailDisabledInSettings;
     }
 
     // publish type dropdown is shown but email options are disabled
@@ -252,15 +252,10 @@ export default class PublishOptions {
             this.totalMemberCount = 1;
         }
 
-        // only perform limit checks and newsletter fetches if the
-        // current user is allowed to email, otherwise we can hit API
-        // permission errors
-        if (this.user.canEmail) {
-            // email limits
-            promises.push(this._checkSendingLimit());
-            // newsletters
-            promises.push(this.store.query('newsletter', {status: 'active', limit: 'all', include: 'count.members'}));
-        }
+        // email limits
+        promises.push(this._checkSendingLimit());
+        // newsletters
+        promises.push(this.store.query('newsletter', {status: 'active', limit: 'all', include: 'count.members'}));
 
         yield Promise.all(promises);
     }