Don't strip out content warnings in replies

By default include the original spoiler text in replies
so as not to accidentally strip out content warnings.

resources/views/show_status.blade.php

@@ -20,7 +20,12 @@
 
         @if ($logged_in)
             <form method="post" action="/timeline/home">
-                <input type="text" name="spoiler_text" placeholder="Spoiler/Warning" />
+                <input
+                    type="text"
+                    name="spoiler_text"
+                    placeholder="Spoiler/Warning"
+                    value="{{ $status['spoiler_text'] }}"
+                />
                 <textarea rows="4" name="status" placeholder="Reply" required autofocus>{{ $status['account']['acct'] }} @foreach ($status['mentions'] as $mention){{ $mention['acct'] }} @endforeach</textarea>
                 <input type="submit" value="Post" />
                 <input type="hidden" name="in_reply_to_id" value="{{ $status['id'] }}" />