Updated design settings page

No ref

- Retired Massively and Editorial as official themes
- Updated icon alignment in sidenav
- Updated grid for larger screens

ghost/admin/app/controllers/settings/design/change-theme.js

@@ -102,20 +102,6 @@ export default class ChangeThemeController extends Controller {
         previewUrl: 'https://london.ghost.io',
         ref: 'TryGhost/London',
         image: 'assets/img/themes/London.jpg'
-    }, {
-        name: 'Editorial',
-        category: 'Magazine',
-        url: 'https://github.com/TryGhost/Editorial',
-        previewUrl: 'https://editorial.ghost.io',
-        ref: 'TryGhost/Editorial',
-        image: 'assets/img/themes/Editorial.jpg'
-    }, {
-        name: 'Massively',
-        category: 'Magazine',
-        url: 'https://github.com/TryGhost/Massively',
-        previewUrl: 'https://massively.ghost.io',
-        ref: 'TryGhost/Massively',
-        image: 'assets/img/themes/Massively.jpg'
     }]
 
     get themesList() {

ghost/admin/app/styles/layouts/settings.css

@@ -1497,7 +1497,7 @@ p.theme-validation-details {
     position: relative;
     top: inherit;
     left: inherit;
-    margin-left: auto;
+    margin: 0 8px 0 auto;
     padding-top: 3px;
 }
 
@@ -1553,6 +1553,7 @@ p.theme-validation-details {
     justify-content: center;
     width: 40px;
     height: 40px;
+    margin-right: -8px;
     border-radius: 50%;
 }
 
@@ -1780,6 +1781,12 @@ p.theme-validation-details {
     margin: 0 0 24px;
 }
 
+@media (min-width: 1800px) {
+    .theme-directory-labs {
+        grid-template-columns: 1fr 1fr 1fr 1fr;
+    }
+}
+
 @media (max-width: 1120px) {
     .theme-directory-labs {
         grid-template-columns: 1fr 1fr;