Update cart controller to be ajax aware on item change and delete
	modified:   local/modules/Front/Controller/CartController.php
Replace wait in functionnal tests with waitFor*
	modified:   tests/functionnal/casperjs/conf/local.js
	modified:   tests/functionnal/casperjs/exe/front/20_register.js
	modified:   tests/functionnal/casperjs/exe/front/30_login.js
	modified:   tests/functionnal/casperjs/exe/front/40_cart.js
	modified:   tests/functionnal/casperjs/exe/front/50-order-process.js
	modified:   tests/functionnal/casperjs/exe/front/60-newsletter.js
Fixed casper tests - I hope so
Removed CartTrait
Pick random product to add to cart
Merge pull request #835 from bibich/tests

Tests