First time registration and login should be streamlined

[KairuByte]

Is your feature request related to a problem? Please describe.
Current onboarding related to registration and login:

• Click Register
• Register an account
• Click Login
• Attempt to log in
• Get told the account is not activated
• Wait for activation
• Attempt to log in

Describe the solution you'd like
Most of the previous is not needed. Registration should automatically log you in, with a polling screen which tells the user "we are awaiting account activation, we will alert you when there is a change to the account status." Depending on admin action (activation/deletion) pop a notification so the user knows what is happening.

This way, the account is immediately logged in, there is no need to retry login dozens of times, and the user is told when something changes.

[Alfagun74]

Registering other users with this could be bothersome. However, for the setup wizard, we could implement a smooth registration-to-login process.

Also, there's no need to log in again for your activation. Your login remains active, and server calls work seamlessly once you're activated.

Implementing a notificication for you being activated is too complicated and not necessary if it just works when its done.

[JoaGamo]

Adding to this, a few suggestions:
After registration and login in, close the wizard automatically if all fields are already set (server URL and rootPath already filled)
Had some users thinking that the application crashed, but the wizard doesn't finish/close itself after logging in.

[Alfagun74]

could implement this via #339