Added 503 error page and streamlined error paging

handlers/index.go

@@ -12,11 +12,7 @@ func HandleRoot() http.Handler {
 	return http.HandlerFunc(
 		func(w http.ResponseWriter, r *http.Request) {
 			if r.URL.Path != "/" {
-				page.Error(
-					"404",
-					"Page not found",
-					"The page or resource you have requested does not exist",
-				).Render(r.Context(), w)
+				ErrorPage(http.StatusNotFound, w, r)
 				return
 			}
 			page.Index().Render(r.Context(), w)