What problem are you trying to solve with Submitty
Currently a sysadmin needs to create a new user or an instructor needs to add a student to a course (which creates a new user if they don't exist).

A new student user cannot add themselves to the server even if there might be courses on the server that allow self-registration (see also issue #3950).

Describe the way you'd like to solve this problem
Similar to other websites that allow users to create a new account for themselves on the server, let's add that as an option for Submitty servers.

• add a boolean configuration setting to the overall server (probably in /usr/local/submitty/config/submity.json) to indicate whether the server allows self-account creation. By default this should be OFF.

• if self-account creation is allowed on the server, then on the login page there should be an option to "create new account".

• create new account should lead to a page that collects & validates the information for the new user. It should confirm that the new account does not collide with an existing account (neither username nor email address can be in use).

• Ideally we should have a confirmation via email step (the server sends an email to the provided address, which returns a hash code / url that allows the user to complete the account creation step.

• the self-creation account has the lowest level privilege.

@cjreed121
what other security notes should we add?