message: refactor(options): add shortcut button for firefox
diff: @@ -8,13 +8,15 @@ import { updateConfigOrProfile, formItemLayout } from '../helpers'
  import { FormComponentProps } from 'antd/lib/form'
  import { Form, Select, Switch, Button } from 'antd'
  -const isChrome = navigator.userAgent.includes('Chrome')
  -
  export class General extends React.Component<Props & FormComponentProps> {
  isReseted = false
  openShortcuts = () => {
  + if (navigator.userAgent.includes('Chrome')) {
  openURL('chrome://extensions/shortcuts')
  + } else {
  + openURL('about:addons')
  + }
  }
  resetConfigs = async () => {
  @@ -45,9 +47,7 @@ export class General extends React.Component<Props & FormComponentProps> {
  return (
  <Form>
  - {isChrome && // @todo wait for firefox https://bugzilla.mozilla.org/show_bug.cgi?id=1303384
  <Button onClick={this.openShortcuts}>{t('opt_shortcuts')}</Button>
  - }
  <Form.Item
  {...formItemLayout}
  label={t('opt_active')}
  