Direct messages column (#4514)

* Added a timeline for Direct statuses
* Lists all Direct statuses you've sent and received
* Displayed in Getting Started
* Streaming server support for direct TL

* Changes to match other timelines in 2.0

app/javascript/mastodon/locales/fr.json

@@ -40,6 +40,7 @@
   "bundle_modal_error.retry": "Réessayer",
   "column.blocks": "Comptes bloqués",
   "column.community": "Fil public local",
+  "column.direct": "Direct messages",
   "column.domain_blocks": "Hidden domains",
   "column.favourites": "Favoris",
   "column.follow_requests": "Demandes de suivi",
@@ -100,6 +101,7 @@
   "emoji_button.symbols": "Symboles",
   "emoji_button.travel": "Lieux & Voyages",
   "empty_column.community": "Le fil public local est vide. Écrivez donc quelque chose pour le remplir !",
+  "empty_column.direct": "You don't have any direct messages yet. When you send or receive one, it will show up here.",
   "empty_column.hashtag": "Il n’y a encore aucun contenu associé à ce hashtag.",
   "empty_column.home": "Vous ne suivez encore personne. Visitez {public} ou bien utilisez la recherche pour vous connecter à d’autres personnes.",
   "empty_column.home.public_timeline": "le fil public",
@@ -154,6 +156,7 @@
   "mute_modal.hide_notifications": "Masquer les notifications de cette personne ?",
   "navigation_bar.blocks": "Comptes bloqués",
   "navigation_bar.community_timeline": "Fil public local",
+  "navigation_bar.direct": "Direct messages",
   "navigation_bar.domain_blocks": "Hidden domains",
   "navigation_bar.edit_profile": "Modifier le profil",
   "navigation_bar.favourites": "Favoris",
@@ -238,6 +241,7 @@
   "search_results.total": "{count, number} {count, plural, one {résultat} other {résultats}}",
   "standalone.public_title": "Un aperçu …",
   "status.block": "Block @{name}",
+  "status.cancel_reblog_private": "Unboost",
   "status.cannot_reblog": "Cette publication ne peut être boostée",
   "status.delete": "Effacer",
   "status.direct": "Direct message @{name}",
@@ -253,6 +257,7 @@
   "status.pin": "Épingler sur le profil",
   "status.pinned": "Pouet épinglé",
   "status.reblog": "Partager",
+  "status.reblog_private": "Boost to original audience",
   "status.reblogged_by": "{name} a partagé :",
   "status.reply": "Répondre",
   "status.replyAll": "Répondre au fil",