Fix celery worker initialization by setting up Django before Celery and fixing import name

proyecto/__init__.py

@@ -1,2 +1,2 @@
-from .celery import app as celery_app
-__all__ = ('celery_app',)
+from .celery import app as celery
+__all__ = ('celery',)

proyecto/celery.py

@@ -1,10 +1,11 @@
 from celery import Celery
 import os
+import django
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'proyecto.settings')
+django.setup()
 
 app = Celery('proyecto')
-os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'proyecto.settings')
 app.config_from_object('django.conf:settings', namespace="CELERY")
 
-app.user_options = {}
-
 app.autodiscover_tasks()