优化：1、增加左侧菜单收缩按钮

2、meta 预览默认选中历史查看
     3、数据查询tinyint转short

root/index.html

@@ -75,15 +75,20 @@
                         <a style="cursor: pointer">绝尘</a>
                     </div>-->
                     <div class="footer" @click="leftMiniSwitch()">
-                        <i :class="['icon', leftMini? 'icon-caret-right':'icon-caret-left']"></i>
+                        <!--<i :class="['icon', leftMini? 'icon-caret-right':'icon-caret-left']"></i>-->
+                        {{leftMini ? 'MK' : 'Meta-Kit'}}
                     </div>
                 </nav>
             </div>
             <div class="col-md-11 col-xs-11">
+                <!-- 固定漂浮在left 用来收缩打开left -->
+                <div id="leftMiniBtn" @click="leftMiniSwitch()" :title="leftMini? '展开左侧菜单': '收起左侧菜单'" data-toggle="tooltip">
+                    <i :class="['icon', leftMini? 'icon-caret-right':'icon-caret-left']" style="top: 50%">   </i>
+                </div>
                 <!--<div style="height: 40px;background-color: #fff;"></div>-->
                 <!-- load main body to here -->
                 <div id="main"></div>
-                <div class="footer">
+                <div class="main-footer">
                     Meta-Kit Dev-v0.2.1
                 </div>
             </div>