[Glitch] Add limited attribute to accounts in REST API and a warning in web UI

Port b4d373a3df to glitch-soc

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

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

@@ -194,3 +194,11 @@ export const getAccountGallery = createSelector([
 
   return medias;
 });
+
+export const getAccountHidden = createSelector([
+  (state, id) => state.getIn(['accounts', id, 'hidden']),
+  (state, id) => state.getIn(['relationships', id, 'following']) || state.getIn(['relationships', id, 'requested']),
+  (state, id) => id === me,
+], (hidden, followingOrRequested, isSelf) => {
+  return hidden && !(isSelf || followingOrRequested);
+});