Usability: Show Desktop Button on the Bottom Right corner should be Borderless

[zxfghwr]

Currently, you need to position your mouse a few pixels above and to the left of the actual corner to press the Show Desktop button.

If you have used the show desktop button (the one in the bottom right) in Windows before, you will know they are borderless and extend all the way to the corner so you don't need to be a precision gamer to press the button every single time.

[xoascf]

Oddly enough, I don't remember having this issue when I merged #169, so it's probably a regression due to a violation of Fitts' law.

[111ebobo]

Currently, you need to position your mouse a few pixels above and to the left of the actual corner to press the Show Desktop button.

If you have used the show desktop button (the one in the bottom right) in Windows before, you will know they are borderless and extend all the way to the corner so you don't need to be a precision gamer to press the button every single time.

In these versions of windows taskbar there should not be the "show desktop" button