User login

[Ekhorn]

Description

As a user, I want to be able to log in to my account, so that I can access my items and account settings.

Acceptance criteria

• An email field should be present.
• A password field should be present.
• The fields should hover over a blurred background of the app.
• A login button should be present that logs the user in when clicked.
• The background and fields should go away, and the user should be placed at the last place they left of, loading in the items within the user's viewport.