更新组件演示页面，方便用户直接使用组件，去除tn-button的默认背景色，tn-avatar修改参数默认值，修复tn-avatar-group最开始头像进行了偏移、修复无法使用标签的bug，tn-badge修改参数默认值，tn-collapse-item修复背景颜色失效问题，滚动通知移除默认背景颜色和字体大小，tn-count-down修复时间单位不正确问题，列表组件修复背景颜色问题，tn-nav-bar返回按钮修改为可进行修改的图标，tn-step添加点击步骤进行跳转，tn-loading修复默认激活颜色出错问题，tn-tag移除默认背景颜色，优化阴影大小css

pages.json

@@ -14,14 +14,6 @@
   "subPackages": [{
     "root": "basicPage",
     "pages": [
-      {
-        "path": "test/test",
-        "style": {
-          "navigationStyle":"default",
-          "navigationBarTitleText": "测试页面",
-          "enablePullDownRefresh": false
-        }
-      },
       {
         "path": "flex-layout/flex-layout",
         "style": {
@@ -298,6 +290,13 @@
           "enablePullDownRefresh": false
           // "pageOrientation": "landscape"
         }
+      }, {
+        "path": "fab/fab",
+        "style": {
+          "navigationBarTitleText": "fab悬浮按钮",
+          "enablePullDownRefresh": false
+          // "pageOrientation": "landscape"
+        }
       }
     ]
   },{
@@ -315,7 +314,19 @@
           "navigationBarTitleText": "粒子登录",
           "enablePullDownRefresh": false
         }
-      }, {
+      },{
+        "path": "login/demo3/demo3",
+        "style": {
+          "navigationBarTitleText": "背景登录",
+          "enablePullDownRefresh": false
+        }
+      },{
+        "path": "login/demo4/demo4",
+        "style": {
+          "navigationBarTitleText": "简约登录",
+          "enablePullDownRefresh": false
+        }
+      },{
         "path": "health/qrcode/qrcode",
         "style": {
           "navigationBarTitleText": "健康码",
@@ -363,6 +374,12 @@
           "navigationBarTitleText": "全屏轮播",
           "enablePullDownRefresh": false
         }
+      },{
+        "path": "life/pano/pano",
+        "style": {
+          "navigationBarTitleText": "3D全景",
+          "enablePullDownRefresh": false
+        }
       },{
         "path": "life/plus/plus",
         "style": {
@@ -370,9 +387,15 @@
           "enablePullDownRefresh": false
         }
       },{
-        "path": "life/browser/browser",
+        "path": "life/candle/candle",
         "style": {
-          "navigationBarTitleText": "浏览器",
+          "navigationBarTitleText": "敬请期待",
+          "enablePullDownRefresh": false
+        }
+      },{
+        "path": "time/clock/clock",
+        "style": {
+          "navigationBarTitleText": "时钟",
           "enablePullDownRefresh": false
         }
       },{