Registration workflow

[xrmx]

• [x] Add tests for user profile view
• [x] Cleanup django-registration templates
• [x] Add index view with link to registration
• [x] Add logout view
• [x] Add reset password view
• [x] Make strings translatable
• [x] Add Italian translation
• [x] Update docs to mention adding a site with installation domain
• [x] Add documentation about setting up an smtp relay
• [x] Bump version and update labadmin-ansible settings