As an admin, I want to create a new user

[duongdev]

For user info, see #70

The "Create user" should contain:

• [x] Name
• [x] Username
• [x] Password (with "generate from username" button)
• [x] Checker ID
• [x] Birthdate
• [x] Hometown
• [x] Sex
• [x] Class
• [x] School year
• [x] Group
• [x] Room

[duongdev]

[web] Danh sách user