Cart functionality

Added cart functionality.
Moved cart items display to 'shop.js'.
Fixed render sequence in 'index.html'.
Added quantity increase and decrease in 'cart.html'.
Added cart documentation. Some minor fixes.

Added search functionality

Added search functionality

Added sorting functionality

Added sorting functionality

Load data and paginate

Loaded books from external JS file.
Added pagination to Overview page.

Split pages into partials

Split pages into partials

Replace the Header

Replace the hero section

Replace the footer

Replace the HTML head

Initial release

1. Create project and folders
2. Add static resources