Implement a button for #188

www/acp.html

@@ -77,6 +77,7 @@
                         <input type="text" id="channame" placeholder="Channel Name">
                         <button class="btn" id="chanlog">Channel log</button>
                     </div>
+                    <button class="btn" id="log_reverse">Reverse Log</button>
                 </form>
                 <pre id="log"></pre>
             </div>

www/assets/js/acp.js

@@ -123,6 +123,12 @@ $("#actionlog_time").click(function() {
     tableResort($("#actionlog table"), "time");
 });
 
+function reverseLog() {
+    $("#log").text($("#log").text().split("\n").reverse().join("\n"));
+}
+
+$("#log_reverse").click(reverseLog);
+
 function getSyslog() {
     $.ajax(WEB_URL+"/api/plain/readlog?type=sys&"+AUTH).done(function(data) {
         $("#log").text(data);