[V1.0] Working application, added notifications.

Ready to upload to store.

backend/modules/todo/models.py

@@ -14,6 +14,4 @@ class Todo(Base):
     complete = Column(Boolean, default=False)
     owner_id = Column(Integer, ForeignKey("users.id"))
 
-    owner = relationship(
-        "User"
-    )
+    owner = relationship("User")