Fix onboarding modal & add re-open button (#129)

* Added a button to open the onboarding modal

* Fixed onboarding modal

* added a show-me-around getting-started menu button

app/javascript/mastodon/features/ui/components/onboarding_modal.js

@@ -44,7 +44,7 @@ const PageTwo = ({ me }) => (
   <div className='onboarding-modal__page onboarding-modal__page-two'>
     <div className='figure non-interactive'>
       <div className='pseudo-drawer'>
-        <NavigationBar account={me} />
+        <NavigationBar onClose={noop} account={me} />
       </div>
       <ComposeForm
         text='Awoo! #introductions'
@@ -83,7 +83,7 @@ const PageThree = ({ me }) => (
       />
 
       <div className='pseudo-drawer'>
-        <NavigationBar account={me} />
+        <NavigationBar onClose={noop} account={me} />
       </div>
     </div>