Add basic webapp files (index.html, welcome.jsp, LoginController.java)
Added ShoppingCart class
Add support for starting shopping and for clearing shopping cart
Added ViewController to handle user commands when logged in, Filter to
handle timed-out sessions
renamed welcome.jsp and added links to different actions
Added browseStore.jsp 
Made name changes to welcome.jsp, LoginServlet.java
Added browseStore.jsp, update ViewManager.java to forward requests to
browseStore.jsp
Added browseItems.jsp
corrected syntax in browseItems.jsp
Added handling for viewItemsByCategory command
Removed comments
Fixed paths to .jsp files (missing /WEB-INF library in path)
fixed paths to .jsp files again...
Fixed request parameters
Corrected path
Corrected error: tried to read from request attribute instead of
parameter.
Performed some style changes
Merge remote-tracking branch 'origin/master'