fix(scanpix): Always set the mimetype image/sjeg for graphic
fix(scanpix): Always set the mimetype image/sjeg for graphic

petrjasek/superdesk-ntb,petrjasek/superdesk-ntb,superdesk/superdesk-ntb,superdesk/superdesk-ntb,petrjasek/superdesk-ntb,superdesk/superdesk-ntb,superdesk/superdesk-ntb,ioanpocol/superdesk-ntb,ioanpocol/superdesk-ntb,petrjasek/superdesk-ntb,ioanpocol/superdesk-ntb