[FIX] set invoice pricelist readonly if invoice is not in a draft state
[FIX] set invoice pricelist readonly if invoice is not in a draft state

acsone/account-invoicing,open-synergy/account-invoicing,brain-tec/account-invoicing,acsone/account-invoicing,brain-tec/account-invoicing,kmee/account-invoicing,kmee/account-invoicing