Added classes for menu items.

This update was done in order to be able change active bar.
Ex: $(.Blog).addClass(“active”);

Next Steps: Fix how links are generated and create new pages for each
product.

Don’t forget:
-To implement databases
-To check how can we change the active bar dynamically.
-To implement users login.
-To implement admin page to add elements.
-To implement ability to add more categories on the products side bar.