[Glitch] Add onboarding prompt when home feed too slow in web UI

Port 00ec43914a to glitch-soc

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

app/javascript/flavours/glitch/selectors/index.js

@@ -137,3 +137,7 @@ export const getAccountHidden = createSelector([
 ], (hidden, followingOrRequested, isSelf) => {
   return hidden && !(isSelf || followingOrRequested);
 });
+
+export const getStatusList = createSelector([
+  (state, type) => state.getIn(['status_lists', type, 'items']),
+], (items) => items.toList());