Bootstrap v4 dark mode for modals and settings window (#1650)

* Bootstrap v4 dark mode for modals and settings window

* Fix package-lock.json

* Fix package-lock.json again

* Merge'd

* Oops

* Refactor into helper

src/renderer/modals/permission/permission.tsx

@@ -6,11 +6,15 @@ import ReactDOM from 'react-dom';
 
 import {MODAL_CANCEL, MODAL_RESULT, RETRIEVE_MODAL_INFO, MODAL_SEND_IPC_MESSAGE} from 'common/communication';
 
-import PermissionModal from './permissionModal';
-
 import 'bootstrap/dist/css/bootstrap.min.css';
 import 'renderer/css/modals.css';
 
+import setupDarkMode from '../darkMode';
+
+import PermissionModal from './permissionModal';
+
+setupDarkMode();
+
 const handleDeny = () => {
     window.postMessage({type: MODAL_CANCEL}, window.location.href);
 };