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/defaultMessages.json

@@ -242,6 +242,14 @@
         "defaultMessage": "Boost",
         "id": "status.reblog"
       },
+      {
+        "defaultMessage": "Boost to original audience",
+        "id": "status.reblog_private"
+      },
+      {
+        "defaultMessage": "Unboost",
+        "id": "status.cancel_reblog_private"
+      },
       {
         "defaultMessage": "This post cannot be boosted",
         "id": "status.cannot_reblog"
@@ -897,6 +905,19 @@
     ],
     "path": "app/javascript/mastodon/features/compose/index.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Direct messages",
+        "id": "column.direct"
+      },
+      {
+        "defaultMessage": "You don't have any direct messages yet. When you send or receive one, it will show up here.",
+        "id": "empty_column.direct"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/direct_timeline/index.json"
+  },
   {
     "descriptors": [
       {
@@ -971,6 +992,10 @@
         "defaultMessage": "Local timeline",
         "id": "navigation_bar.community_timeline"
       },
+      {
+        "defaultMessage": "Direct messages",
+        "id": "navigation_bar.direct"
+      },
       {
         "defaultMessage": "Preferences",
         "id": "navigation_bar.preferences"
@@ -1399,6 +1424,14 @@
         "defaultMessage": "Boost",
         "id": "status.reblog"
       },
+      {
+        "defaultMessage": "Boost to original audience",
+        "id": "status.reblog_private"
+      },
+      {
+        "defaultMessage": "Unboost",
+        "id": "status.cancel_reblog_private"
+      },
       {
         "defaultMessage": "This post cannot be boosted",
         "id": "status.cannot_reblog"