Add shortcut/function to navigate image displays
Operating System: All
Description of the feature
In single-window-mode, there are no keyboard shortcuts to navigate the tabs. The Alt-[number] shortcuts are limited to the first 10 images (and only 1-5 are usable IMHO).
Gimp could use a "Next tab", "Previous tab" pair of shortcuts so that all images can be reached using the keyboard.
In multiple window mode, this is less of a problem (you can use the desktop manager Alt-Tab to navigate the windows) but the same shortcuts could be used to iterate only the Gimp image display windows (and thus skip Gimp docks and other apps).