For those who are looking for fullscreen images on HADash, I made a little hack.You just need to add short code to
variables.yaml in your skin definiton folder.
You can set two options:
// set timeout in sec to auto hide fullscreen mode, 0 to stay untill you click again ihRetainTimeout = 30, // based on widget name (be carefull as non alfa letters are replaced with '-'; leave empty  for all images with 'img-frame' class ihIdKeywords = ['cam', 'radar'];
here is code: Gist