[Glitch] Allow joining several hashtags in a single column

Port 4c03e05a4e to glitch-soc

This introduces new requirements in the API:

  `/api/v1/timelines/tag/:tag` now accepts new params: `any`, `all` and `none`
  It now returns status matching tag :tag or any of the :any, provided that
  they also include all tags in `all` and none of `none`.

app/javascript/flavours/glitch/features/standalone/hashtag_timeline/index.js

@@ -27,7 +27,7 @@ export default class HashtagTimeline extends React.PureComponent {
     const { dispatch, hashtag } = this.props;
 
     dispatch(expandHashtagTimeline(hashtag));
-    this.disconnect = dispatch(connectHashtagStream(hashtag));
+    this.disconnect = dispatch(connectHashtagStream(hashtag, hashtag));
   }
 
   componentWillUnmount () {