[User Story] Create user account

[alexkisielewicz]

User story:

As Site User, I want to be able to create an account on the blog so that I can add posts, comments, and likes

Acceptance criteria:

• A user should be able to create an account on the website by providing their email, name and password.
• The user should be required to provide a unique email when creating an account.
• The user should be able to log in to their account using their email address and password (if the account has been verified).

Tasks

• [x] Add 3 buttons in the template: for registration, login, and logout
• [x] Install allauth
• [x] Add accounts links/ to urls