Merged w/ Justin - Added Item View, Express Cart, Logout
Added changes due to missed requirements

+ Cart must be global, that is, it should be viewed anywhere. Hence,
cart creation is created on first request
+ Update cart table data to include shipping and taxes
With regards to the last commit, I've also made a pop-up cart. Activated
by clicking the cart button.
Minor bug fix:

Character was appearing on header. Removed
Merged w/ Branch