Updated dataBaseConnection.php
Updated to class DAL for easier insertion on database from other php file.
Updated getBookByTitle.php
Inserted lines to export to database
Updated getBookByCategory.php
Inserted lines to export to database
Updated getCategories.php
Inserted lines to export to database
Updated getFirstBooks.php
Inserted lines to export to database
Updated getNewBooks.php
Inserted lines to export to database