[Glitch] Add dynamic document title to WebUI

Port part of 43b5d5e38d to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/ui/index.js

@@ -54,9 +54,10 @@ import {
   FollowRecommendations,
 } from 'flavours/glitch/util/async-components';
 import { HotKeys } from 'react-hotkeys';
-import { me } from 'flavours/glitch/util/initial_state';
+import { me, title } from 'flavours/glitch/util/initial_state';
 import { closeOnboarding, INTRODUCTION_VERSION } from 'flavours/glitch/actions/onboarding';
 import { defineMessages, FormattedMessage, injectIntl } from 'react-intl';
+import { Helmet } from 'react-helmet';
 
 // Dummy import, to make sure that <Status /> ends up in the application bundle.
 // Without this it ends up in ~8 very commonly used bundles.
@@ -660,6 +661,10 @@ class UI extends React.Component {
           <LoadingBarContainer className='loading-bar' />
           <ModalContainer />
           <UploadArea active={draggingOver} onClose={this.closeUploadModal} />
+
+          <Helmet>
+            <title>{title}</title>
+          </Helmet>
         </div>
       </HotKeys>
     );