Pinned statuses (#4675)

* Pinned statuses

* yarn manage:translations

app/javascript/mastodon/locales/fr.json

@@ -168,6 +168,7 @@
   "status.mention": "Mentionner",
   "status.mute_conversation": "Masquer la conversation",
   "status.open": "Déplier ce statut",
+  "status.pin": "Pin on profile",
   "status.reblog": "Partager",
   "status.reblogged_by": "{name} a partagé :",
   "status.reply": "Répondre",
@@ -179,6 +180,7 @@
   "status.show_less": "Replier",
   "status.show_more": "Déplier",
   "status.unmute_conversation": "Ne plus masquer la conversation",
+  "status.unpin": "Unpin from profile",
   "tabs_bar.compose": "Composer",
   "tabs_bar.federated_timeline": "Fil public global",
   "tabs_bar.home": "Accueil",