Merge tag 'v1.6.0rc4' into sync/upstream-1.6.0rc4

Conflicts:
      app/javascript/mastodon/features/getting_started/index.js
      app/javascript/packs/public.js
      app/javascript/styles/components.scss

app/javascript/mastodon/features/ui/index.js

@@ -36,6 +36,7 @@ import {
   FavouritedStatuses,
   Blocks,
   Mutes,
+  PinnedStatuses,
 } from './util/async-components';
 
 // Dummy import, to make sure that <Status /> ends up in the application bundle.
@@ -235,6 +236,7 @@ export default class UI extends React.PureComponent {
 
             <WrappedRoute path='/notifications' component={Notifications} content={children} />
             <WrappedRoute path='/favourites' component={FavouritedStatuses} content={children} />
+            <WrappedRoute path='/pinned' component={PinnedStatuses} content={children} />
 
             <WrappedRoute path='/statuses/new' component={Compose} content={children} />
             <WrappedRoute path='/statuses/:statusId' exact component={Status} content={children} />