Default主题fixbug (#421)

* default主题fixbug
1.补上误删的网页title
2.修复network页纵坐标数值显示不全
3.修复network，多个legend导致的遮挡主图表问题

* fix

* fix

* fix

* fix

* fix

* fix

resource/template/theme-default/home.html

@@ -194,7 +194,7 @@
             ]
         },
         mixins: [mixinsVue],
-            created() {
+        created() {
             this.servers = JSON.parse('{{.Servers}}').servers;
             this.group()
         },