cleaned up upload_media.json and added support for additional image types
cleaned up upload_media.json and added support for additional image types

thequbit/yellr-server,Nolski/yellr-server,thequbit/yellr-server,Nolski/yellr-server,hhroc/yellr-server,hhroc/yellr-server,thequbit/yellr-server,thequbit/yellr-server,hhroc/yellr-server,Nolski/yellr-server,hhroc/yellr-server,Nolski/yellr-server