add another row for buttons

dashboard.html

@@ -31,10 +31,12 @@
         </div>
     </div>
     <div class="row">
-        <div class="col-lg-7">
+        <div class="col-lg-12">
             <input type="text" class="form-control" id="shout" value="" placeholder="喊话">
         </div>
-        <div class="col-lg-5">
+    </div>
+    <div class="row">
+        <div class="col-lg-12">
             <button class="btn btn-default" id="shout_button" data-toggle="tooltip" title="向全服所有房间喊话">喊话</button>
             <button class="btn btn-default" id="stop_button" data-toggle="tooltip" title="停止新建房间，不影响现有的房间">停服</button>
             <button class="btn btn-default" id="welcome_button" data-toggle="tooltip" title="更改欢迎信息">欢迎</button>