Show user id on UserPage, and style change

Summary | 概述: Add user id and user name on UserPage, layout Kick/Ban in row, and adding icons to them

Type | 类型: add

Test Plan | 测试计划:

Seeing user's name and user's id in column under the avatar;

Seeing only user's id while user doesn't has name

Seeing Kick/Ban button in row, with icons beside them.