offloaded some apps.lyric.views responsibilities to new Celery depend fn in .tasks; core.celery created for celery config; CELERY_BROKER_URL added to .settings & throughout project; some lyric view IT responsibility now accordingly covered by task UT domain

src/core/celery.py

@@ -0,0 +1,10 @@
+import os
+
+from celery import Celery
+
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'core.settings')
+
+app = Celery('core')
+app.config_from_object('django.conf:settings', namespace='CELERY')
+app.autodiscover_tasks()