Settings refactor and redesign (#1669)

* new settings work

* Polishing work on settings refactor

* Run intl:extract

* List view -> Rows view

* Remove current preferred system theme indicator to make the themes fit on one line

* Remove extra margin on top of navstack

components/ui/NavStack.vue

@@ -19,6 +19,10 @@ ul {
   list-style-type: none;
   margin: 0;
   padding: 0;
+
+  > :first-child {
+    margin-top: 0;
+  }
 }
 
 li {