Change style of sign up page

[andersganander]

Change the style of the sign up page:

• [x] Remove the image to the right
• [x] Change columns and center the sign in form
• [x] Add Container above the sign in form with a header (e g ALBUMTALK)

[andersganander]

-Updated SignUpForm.js

• Added container with image instead of header
• Updated SigninUpForm.module.css