sort threads in topic by activity by default (bump) and add setting

views/user/settings.etlua

@@ -15,6 +15,11 @@
   </div>
   </form>
   <form method="post" action="">
+    <label for="topic_sort_by">Sort threads by:</label>
+    <select id="topic_sort_by" name="topic_sort_by">
+      <option value="activity" <%= session.sort_by == "activity" and "selected" %>>Latest activity</option>
+      <option value="thread" <%= session.sort_by == "thread" and "selected" %>>Thread creation date</option>
+    </select>
     <label for="status">Status</label>
     <input type="text" id="status" name="status" value="<%= me.status %>" maxlength="70" placeholder="Will be shown under your username. Max 70 characters">
     <label for="babycode-content">Signature</label><br>