wsa-helpcenter-white Release v1.9.0

FIX Solve error CRITICAL Uncaught TypeError: Unsupported operand types: string + string
FIX Variable products are created simple via WC REST API due to a wrong check
TWEAK Orders older than 1 year cannot be processed anymore to avoid errors
TWEAK Define as payment method to the imported orders
TWEAK Migrate the API v5 to V7
TWEAK Disable email notification gives now the ability to select per order status
FEATURE Add the ability to define in general settings a source for the internal referrece field