reloadUIImages
Obtains a list of all UI controls that can have an image associated with them, and reloads the image if one exists. Allows for globally updating all UI images from disk. The 'reloadImage' command offers this functionality, but it can be a bit of a pain to determine the control name of a Shelf item, for example.
Some image-bearing control types may not be considered (in other words, I may have missed some).