Allow the removal of items from the basket

Previously, customers were unable to remove individual items from their basket, which meant they would have to empty the entire basket if they wanted to remove an individual item. A "Remove" button has been added to each item in the basket.

https://trello.com/c/j6bYxMO8

![](http://www.reactiongifs.com/r/ws.gif)
Line is too long. [90/80]