Attempting to create standalone CRUD functionality on one page.

I've made the following changes:
+ incorporated the update function into views.py
+ incorporated the delete function into views.py
+ updated post_list.html to act as a lnading page with basic CRUD
functionality for all listings.

Outstanding:
- redirect to landing page on submit (update/delete).  Add New works fine.
- error on delete.  Django tries to reload deleted blog post.  Needs
  redirect or try/else

Base code does not seem optimized for this exercise.