Move get_first_image implementation to Product model
Move get_first_image implementation to Product model

jreigel/saleor,KenMutemi/saleor,itbabu/saleor,KenMutemi/saleor,mociepka/saleor,HyperManTT/ECommerceSaleor,KenMutemi/saleor,car3oon/saleor,tfroehlich82/saleor,UITools/saleor,HyperManTT/ECommerceSaleor,jreigel/saleor,maferelo/saleor,itbabu/saleor,itbabu/saleor,car3oon/saleor,jreigel/saleor,tfroehlich82/saleor,maferelo/saleor,UITools/saleor,mociepka/saleor,maferelo/saleor,mociepka/saleor,car3oon/saleor,tfroehlich82/saleor,UITools/saleor,UITools/saleor,UITools/saleor,HyperManTT/ECommerceSaleor