feat: refactor the loading of the latest config so there's now two

functions, one for the server and one for the new admin web page

lib/new-admin/graphql/schema.js

@@ -258,7 +258,7 @@ const resolvers = {
       serverLogs.getServerLogs(from, until, limit, offset),
     transactions: (...[, { from, until, limit, offset }]) =>
       transactions.batch(from, until, limit, offset),
-    config: () => settingsLoader.loadLatestConfig(),
+    config: () => settingsLoader.loadLatestConfigOrNone(),
     accounts: () => settingsLoader.loadAccounts()
   },
   Mutation: {