feat: show alert/prompt when settings changes require restart (#2401)

* fix: correct 'StatusChecker' typo

* feat: add restart required check to StatusChecker

* fix(perms): remove MANAGE_SETTINGS permission

* fix: allow alert to be dismissed

* fix(lang): add missing string in SettingsServices

* fix(frontend): fix modal icon border

* fix(frontend): un-dismiss alert if setting reverted not require server restart

* fix(backend): restart flag only needs to track main settings

* fix: rebase issue

* refactor: appease Prettier

* refactor: swap settings badge order

* fix: type import for MainSettings

* test: add cypress test for restart prompt

server/utils/restartFlag.ts

@@ -0,0 +1,23 @@
+import type { MainSettings } from '../lib/settings';
+import { getSettings } from '../lib/settings';
+
+class RestartFlag {
+  private settings: MainSettings;
+
+  public initializeSettings(settings: MainSettings): void {
+    this.settings = { ...settings };
+  }
+
+  public isSet(): boolean {
+    const settings = getSettings().main;
+
+    return (
+      this.settings.csrfProtection !== settings.csrfProtection ||
+      this.settings.trustProxy !== settings.trustProxy
+    );
+  }
+}
+
+const restartFlag = new RestartFlag();
+
+export default restartFlag;