move to top/bottom button at filters|hightlites tab

[copland]

I have about 200 items in favorite.dat and adding new item that should be on the top of the list takes more and more time, because I have to press and hold down the up button like 10-15 seconds until new item becames first of the list.. it would be nice to have two additional buttons there: move to top and move to bottom, so I can add new item on top in four clicks...