fixing minor XSS in composer image cropper
fixing minor XSS in composer image cropper

avdevs/concrete5,matt9mg/concrete5,MichaelMaar/concrete5,avdevs/concrete5,matt9mg/concrete5,MichaelMaar/concrete5,TimDix/concrete5,TimDix/concrete5,avdevs/concrete5,matt9mg/concrete5,MichaelMaar/concrete5,TimDix/concrete5