Add Quick Slideshow drop-down, with direction options and other suggestions

[THX1138]

Love the program, thank you all for your efforts, this is my favourite and preferred image viewer. i go between this and Irfran View.

Here are some improvements I would make, if I could.

[*] Add a drop-down menu to the Quick Slideshow toolbar item, listing the direction options (forward, backwards, random) and time setting -also a right-click option for configuring these in view and fullscreen modes would be really handy.
[*] Option to continue slideshow when exiting fullscreen, like XnView Classic.
[*] Right-click option to enable/disable toolbar
[*] Audo-hiding navigation controls at the bottom of the screen
[*] Ability to configure right-click menu

Thanks again for making a great piece of software