css added to password reset, activation and registration messages

djangoldp_account/static/base.css

...nt/templates/django_registration/activation_complete.html

...ount/templates/django_registration/activation_failed.html

...nt/templates/django_registration/registration_closed.html

.../templates/django_registration/registration_complete.html

...p_account/templates/registration/password_reset_done.html