Option to move modifier in stack to top/bottom

@loic.dautry: I can see why they didn't, though. Imagine you are working with a full stack of modifers and your computer is already struggling to keep up, if you need to rearrange them, a binary up/down function would be easier to handle than trying to drag an item, have the program freeze while it tries to recalculate and end up not where you wanted it. Sort of like when using slider values. You might use the slider instead of typing in a value and when the computer finishes recalculating, it may far beyond, or quite a bit less than the value you were trying to reach.

That being said, similar to slider values (pull/push or typing), you could have both up/down/top/bottom buttons as well as a drag'n'drop system.

disagree. A proper drag'n'drop system in that case would behave like nothing is updated before mouse release. In that way : no expensive updating, and possibility to move a modifier toward any position in the list easily and fast (which the current behavior can't because you need to move modifiers step by step no matter where you want to send it and Blender needs t update every stack change)

@loic.dautry: I suppose I overlooked optimization. I always assume the "quick and dirty" approach will be taken. I still stand by having both systems in place.