update composer before script in travis config
update composer before starting composer install
create exception for action part
create CombinationNotFoundException
create form for adding product in cart
add method checking if stock needed is valid or not
update thelia model
update schema, remove white spaces
exit script if not authorized ip
fix insert.sql formating request
remove combination_id in stock table
update smarty
add more validation constraints
manu le bossu's backup
update faker script
change stock table name
remove references to stock table
remove increase property to product_sale_elements
update model removing increase property
Merge branch 'cart'

Conflicts:
	composer.lock
	core/lib/Thelia/Model/Base/Attribute.php
	core/lib/Thelia/Model/Base/AttributeAv.php
	core/lib/Thelia/Model/Base/AttributeCombination.php
	core/lib/Thelia/Model/Base/AttributeCombinationQuery.php
	core/lib/Thelia/Model/Base/Cart.php
	core/lib/Thelia/Model/Base/CartItem.php
	core/lib/Thelia/Model/Base/CartItemQuery.php
	core/lib/Thelia/Model/Base/Currency.php
	core/lib/Thelia/Model/Base/CurrencyQuery.php
	core/lib/Thelia/Model/Base/Product.php
	core/lib/Thelia/Model/Base/ProductPrice.php
	core/lib/Thelia/Model/Base/ProductPriceQuery.php
	core/lib/Thelia/Model/Map/AttributeCombinationTableMap.php
	core/lib/Thelia/Model/Map/CartItemTableMap.php
	core/lib/Thelia/Model/Map/CurrencyTableMap.php
	core/lib/Thelia/Model/Map/ProductPriceTableMap.php
	core/lib/Thelia/Model/Map/ProductTableMap.php
	install/thelia.sql
	local/config/schema.xml