change side drawer to use shoutbox name

src/components/side_drawer/side_drawer.vue

@@ -90,7 +90,7 @@
           @click="toggleDrawer"
         >
           <router-link :to="{ name: 'chat' }">
-            <i class="button-icon icon-chat" /> {{ $t("nav.chat") }}
+            <i class="button-icon icon-chat" /> {{ $t("shoutbox.title") }}
           </router-link>
         </li>
       </ul>

src/i18n/en.json

@@ -113,7 +113,6 @@
     "about": "About",
     "administration": "Administration",
     "back": "Back",
-    "chat": "Local Chat",
     "friend_requests": "Follow Requests",
     "mentions": "Mentions",
     "interactions": "Interactions",