Poll: Menu scrolling behaviour [CR]

UIMenu: Start scrolling in the middle of the list and keep the selection centered as long as the list isnt at the top or bottom.

Since this PR causesed some divided opinions please comment here how it should be handeld.

I wanted to alter the scrolling behaviour of the UIMenu (mostly visible in the debugmenu) to match mostly all other windows with lists and make it somewhat consistent through all menus.

Top/Bottonm scrolling (UIMenu): Only start scrolling, if the selection is already at the edge of the list.
Centered Scrolling (Char creation): Start scrolling in the middle of the list and keep the selection centered as long as the list isn't at the top or bottom.

Possible solutions:
Only Top/Bottom scrolling.
Only Centered Scrolling.
Add an option to switch between both.

Please Comment!