add Common extra fields

Following fields added to Common:
-shipping_company_data
-buy_order_number
-delivery_note_number

Agrego los siguientes campos a Common:
-shipping_company_data (Información de empresa de envíos)
-buy_order_number (Número de orden de compra)
-delivery_note_number (Número de remito)
Merge remote-tracking branch 'origin/master' into eFact