Support web page & image cropping in a video wall to allow a wall to show a single web page or image

The current video wall options are either a video/video feed that can be cropped or a pre-cropped image. Apply the cropping capabilities to images (so they don't have to be pre-cropped) & web pages (so a video wall can show one web page but with parts on each screen) This would enable the display for example of a large map with locations of delivery drivers or taxis or breakdown or events or any number of other real-time things