reenabled admin area; outfitted apps.lyric.models w. AbstractBaseUser instead of custom user class; many other fns & several models updated to accomodate, such as set_unusable_password() method to base user model; reset staging db to prepare for refreshed lyric migrations to accomodate for retrofitted pw field

src/functional_tests/test_login.py

@@ -2,11 +2,14 @@ import re
 from unittest.mock import patch
 from selenium.webdriver.common.by import By
 from selenium.webdriver.common.keys import Keys
+
 from .base import FunctionalTest
 
+
 TEST_EMAIL = "discoman@example.com"
 SUBJECT = "A magic login link to your Dashboard"
 
+
 class LoginTest(FunctionalTest):
     @patch('apps.lyric.views.requests.post')
     def test_login_using_magic_link(self, mock_post):