Improvements for dark mode (#322)

* Action colors are now determined based on theme

* Fix unused import

* Update some more colors based on theme

* Updated release notes

* Better color choice

* Update for home screen

* Updates for app drawer

* remove unused import

lib/widget/paginator.dart

@@ -410,7 +410,7 @@ abstract class PaginatedSearchState<T extends PaginatedSearchWidget> extends Sta
   Widget buildSearchInput(BuildContext context) {
     return ListTile(
       trailing: orderingOptions.isEmpty ? null : GestureDetector(
-        child: FaIcon(FontAwesomeIcons.sort, color: COLOR_CLICK),
+        child: FaIcon(FontAwesomeIcons.sort, color: COLOR_ACTION),
         onTap: () async {
           _saveOrderingOptions(context);
         },