Fix a couple small bugs (issue 6539339)

-> Adjusting the character of the 'shake' animation to keep
   a single phase, and instead stagger the animations slightly
-> Fixing issue where widget is not given the size change callback
   if the widget is resized on drop

Change-Id: I9cd9e6cd39009d9e5c70e745812b6ece71b845ee
2 files changed