Use upstream's settings for CW auto-expand and column swiping (#1770)

* Use Mastodon server-side settings for automatically expanding toots with CWs

* Add modal warning about settings changes

* Use Mastodon server-side settings for disabling swiping

app/javascript/flavours/glitch/actions/importer/normalizer.js

@@ -1,7 +1,6 @@
 import escapeTextContentForBrowser from 'escape-html';
 import emojify from 'flavours/glitch/util/emoji';
 import { unescapeHTML } from 'flavours/glitch/util/html';
-import { expandSpoilers } from 'flavours/glitch/util/initial_state';
 
 const domParser = new DOMParser();