Add direct message tab.

src/components/dm_timeline/dm_timeline.js

@@ -0,0 +1,14 @@
+import Timeline from '../timeline/timeline.vue'
+
+const DMs = {
+  computed: {
+    timeline () {
+      return this.$store.state.statuses.timelines.dms
+    }
+  },
+  components: {
+    Timeline
+  }
+}
+
+export default DMs

src/components/dm_timeline/dm_timeline.vue

@@ -0,0 +1,5 @@
+<template>
+  <Timeline :title="$t('nav.dms')" v-bind:timeline="timeline" v-bind:timeline-name="'dms'"/>
+</template>
+
+<script src="./dm_timeline.js"></script>

src/components/nav_panel/nav_panel.js

@@ -5,6 +5,9 @@ const NavPanel = {
     },
     chat () {
       return this.$store.state.chat.channel
+    },
+    showDMs () {
+      return this.$store.state.instance.scopeOptionsEnabled
     }
   }
 }

src/components/nav_panel/nav_panel.vue

@@ -12,6 +12,11 @@
             {{ $t("nav.mentions") }}
           </router-link>
         </li>
+        <li v-if='currentUser && showDMs'>
+          <router-link :to="{ name: 'dms', params: { username: currentUser.screen_name } }">
+            {{ $t("nav.dms") }}
+          </router-link>
+        </li>
         <li v-if='currentUser && currentUser.locked'>
           <router-link to='/friend-requests'>
             {{ $t("nav.friend_requests") }}