升级：1、增加界面夜间模式

2、qtask 功能交互升级
     3、mysql连接管理增加心跳保活
     4、其他修改

root/plat/db.html

@@ -43,7 +43,7 @@
     </div>
 
     <div class="col-md-12">
-        <table class="table table-bordered table-hover" style="width: 100%">
+        <table class="table table-bordered table-hover">
             <thead>
             <tr>
                 <th v-for="field in cfg.cols" v-text="field.label"></th>
@@ -111,7 +111,7 @@
                                 <input v-model="row.pwd" class="form-control" id="pwd" placeholder="连接密码">
                             </div>
                             <div class="col-md-2">
-                                <a @click="loadCatalogs" class="btn" href="javascript:;">获取catalogs</a>
+                                <a @click="loadCatalogs" class="btn btn-default" href="javascript:;">获取catalogs</a>
                             </div>
                         </div>
                         <div class="form-group">