Allow cache-control header through CORS
Allow cache-control header through CORS

- allow header since it is needed by dropzone

almey/policycompass-services,almey/policycompass-services,mmilaprat/policycompass-services,almey/policycompass-services,mmilaprat/policycompass-services,policycompass/policycompass-services,mmilaprat/policycompass-services,policycompass/policycompass-services,policycompass/policycompass-services