Join page as an user

As a user I want that I can give me a name, so that others can identify me.

Acceptance Criterias

• When a new person calls the page, it needs to define its name
  • Any name is possible, duplicates are also possible. For unique identification every name has an additional 4 digits
  • Combination of user name + 4 digits needs to be unique
• After the person decided for a name, it is a user
  • The user name with digits are shown on the page
  • When clicking on the name, it is possible to change the name. It is still the same user internally.
• When a user comes back to the page, then it will be identified.

Note

• This issue also includes the first design of the webpage.