feat(preferences): extension modals into extension panes (#683)

* feat(preferences): show inline extensions in extensions pane

* wip

* wip

* refactor: convert ComponentView to React component

* refactor: convert ComponentView to React component

* chore: fix merge conflicts

* feat: don't show features whose `area` is "room", update modal items' icons in Preferences menu

* chore: fix TS error

* feat: don't show 2FA Manager in modal-based component

* feat: remove `ExtendedDataReloadComplete` event, since Extensions Manger is being removed from the app

* chore: avoid hardcoded values in svg image, optimize `if` condition

* chore: remove remnant comment

* fix: fix typescript errors

Co-authored-by: vardanhakobyan <vardan_live@live.com>

app/assets/javascripts/components/Icon.tsx

@@ -50,6 +50,7 @@ import EyeOffIcon from '../../icons/ic-eye-off.svg';
 import LockIcon from '../../icons/ic-lock.svg';
 import ArrowsSortUpIcon from '../../icons/ic-arrows-sort-up.svg';
 import ArrowsSortDownIcon from '../../icons/ic-arrows-sort-down.svg';
+import WindowIcon from '../../icons/ic-window.svg';
 
 import { toDirective } from './utils';
 import { FunctionalComponent } from 'preact';
@@ -106,6 +107,7 @@ const ICONS = {
   'check-bold': CheckBoldIcon,
   'account-circle': AccountCircleIcon,
   'menu-arrow-down': MenuArrowDownIcon,
+  window: WindowIcon
 };
 
 export type IconType = keyof typeof ICONS;