Use admin table settings component to render featured settings

Now, with the same template we can render all kind of settings.

app/assets/stylesheets/admin/settings/featured_settings_table.scss

@@ -1,6 +0,0 @@
-.admin .featured-settings-table {
-
-  td {
-    max-width: $global-width / 3;
-  }
-}

app/assets/stylesheets/admin/settings/table.scss

@@ -0,0 +1,13 @@
+.admin {
+  .featured-settings-table {
+    td {
+      max-width: $global-width / 3;
+    }
+  }
+
+  .mixed-settings-table {
+    td {
+      width: 50%;
+    }
+  }
+}