v3.1.0 New Dashboard, New UI

• 优化前端界面

  • 新建对话添加展开动画
  • 对话列表添加对话图表
  • 输入框上方添加菜单栏
  • 消息上方添加菜单栏
  • 添加订单历史见面
  • 重构产品分类逻辑

• 后台管理界面

  • 布局后台管理界面
  • 对话、用户、订单表格
  • 一些统计数据

• Optimization of the front-end interface

  • Add expand animation to new dialogs
  • Add dialog charts to dialog list
  • Add menu bar above input box
  • Add menu bar above the message
  • Add order history meet
  • Reorganize product categorization logic

• Backend management interface

  • Layout of the backend administration interface
  • Dialog, user, order forms
  • Some statistics

** PR: **

• Optimization of the user interface and finish the preliminary dashboard panels by @AprilNEA in #158

Full Changelog: v3.0.1...v3.1.0