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/apps/lyric/admin.py

@@ -1,3 +1,6 @@
 from django.contrib import admin
+from .models import Token, User
 
-# Register your models here.
+
+admin.site.register(User)
+admin.site.register(Token)