fixed long presses (now moving the pointer away from the long press
point correctly aborts the long press), implemented context-aware long
press animation
fixed buttons scaling issue
fixed temp scrap behavior wrt moving items
fixed issue with dotted border not showing up for TempScraps created by
landing in the landing zone
bubble menu and selection handler are now teaming up for selection
management, bubble menu now appears and disappears correctly (or so it
seems)
temp apk for Nick!