Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `README.md`:
  Minor upstream change, our README is completely different.
  Kept ours.
- `lib/tasks/assets.rake`:
  glitch-soc has extra code to deal with its theming system,
  upstream changed a line that exists in glitch-soc.
  Applied upstream changes.

app/javascript/mastodon/initial_state.js

@@ -134,6 +134,7 @@ export const usePendingItems = getMeta('use_pending_items');
 export const version = getMeta('version');
 export const translationEnabled = getMeta('translation_enabled');
 export const languages = initialState?.languages;
+export const statusPageUrl = getMeta('status_page_url');
 
 // Glitch-soc-specific settings
 export const maxChars = (initialState && initialState.max_toot_chars) || 500;