Working on quantity and totals
CartManager::addItem(String, Array)

- Overloaded CartManager::addItem() to take a string parameter (key of
the item) and store the item under that key in the cart array
Added a checkout button and page
Tweaked mens and cart page
Updated mens page
Added some to checkout
Added some forms to checkout
Updated checkout
CartManager::addItemByKey

- removed CartManager::addItem(key, value) and replaced with
CartManager::addItemByKey(key, value); PHP does not support operator
overloading
Remove Item From Cart Closes #16

- users are able to remove any item from the cart regardless of the
items location in the cart
More updates to Checkout
Added validations to checkout
Fixed navbar, closes #20
updated checkout
CSS tweak, more fix to the header.php
Added basic validation checks for completion
Working on summary page
Started adding checkout functionality
Adding database functionality to checkout'
Trying to get the database working