fix: correctly fall back to English name in LanguageSelector (#1537)

* fix: correctly fall back to English name in LanguageSelector

* refactor: clean up language sort & name logic

* refactor: also clean up region sort & name logic

* refactor: use arrow functions

server/lib/settings.ts

@@ -14,6 +14,7 @@ export interface Library {
 export interface Region {
   iso_3166_1: string;
   english_name: string;
+  name?: string;
 }
 
 export interface Language {