Merge branch 'master' into 49-load-user-reviews-and-books-from-db-into-m-l-algorithm

src/db/create_tables_insert_data/Users.sql

src/db/grant_tables_add_constraint.sql

src/scraper/get_book_information.py

src/scraper/test_amazon_requests.py

src/testing/run_all_system_tests.py

src/testing/run_all_unit_tests.py

src/testing/run_everything.py

src/web/public/stylesheets/style.css

src/web/routes/account.js

src/web/routes/index.js

src/web/test/gui_tests/config.py

src/web/test/gui_tests/database.ini

src/web/test/gui_tests/database_test.ini

src/web/test/gui_tests/test_authordetails.py

src/web/test/gui_tests/test_bookdetails.py

src/web/test/gui_tests/test_regression_authentication.py

src/web/test/gui_tests/test_search_functionality.py

src/web/test/gui_tests/test_signin.py

src/web/test/gui_tests/test_signup.py

src/web/views/details.hbs