Created and edited html files in templates, and edited views and models in the bookshelf app

+ Created and edited the authors, books, author_details, and book_details html files according to the lab specifications.
+edited the models to have get_absolute_url to configure urls to Books and Author
+edited the views to contain the Function based view for home.html and the class based views for the authors, books, author_details, and book_details html files
+these were done to configure urls and to connect the models and views