Do not show title in history if title is disabled.

paste/templates/paste/history.html

@@ -6,7 +6,9 @@
     <table class="table table-striped table-bordered">
     <tr>
        <th>#</th>
+       {% if PASTE.has_title %}
        <th>{% trans 'Title' %}</th>
+       {% endif %}
        <th>{% trans 'Language' %}</th>
        <th>{% trans 'Size' %}</th>
        <th>{% trans 'Paste time' %}</th>
@@ -17,7 +19,9 @@
     {% for paste in pastes %}
     <tr>
         <td>{{ paste.id }}</td>
+        {% if PASTE.has_title %}
         <td class="title"><a href="{% url 'paste' slug=paste.slug %}">{{ paste.title|truncatechars:40 }}</a></td>
+        {% endif %}
         <td>{% trans paste.language.name %}</td>
         <td>{{ paste.size }}</td>
         <td>{{ paste.paste_time }}</td>