frontend: fix message view not scrolling to bottom when re-selecting channel

frontend/src/components/ChannelView.svelte

@@ -16,13 +16,9 @@
         width: 100%;
         height: 100%;
     }
-
-    .hidden {
-        display: none;
-    }
 </style>
 
-<div class="main-container" class:hidden={ !$showChannelView }>
+<div class="main-container">
     <ChannelTopBar channel={ channel } />
     <Messages channelId="{ channel.id }" />
     <MessageInput channel={ channel } />

frontend/src/components/Main.svelte

@@ -29,7 +29,7 @@
     {#if $showSidebar}
         <Sidebar />
     {/if}
-    {#if !($smallViewport && $showSidebar)}
+    {#if !($smallViewport && $showSidebar) && $showChannelView}
         <ChannelView channel={$selectedChannel} />
     {/if}
 </div>

frontend/src/gateway.js

@@ -114,7 +114,7 @@ export default {
                     this.reconnectDelay *= 2;
                 }
                 this.reconnectTimeout = setTimeout(() => {
-                    this.init();
+                    this.init(token);
                 }, this.reconnectDelay);
             }