HW7b: animation and sound

Drag and Drop: Drag Digit button to "Drop Here" button to input number
Animation: Click Digit button and then "Drop Here" button
clean
HW7B: animation,dnd and sound

App engine url: http://3-dot-nyu-smg-mastermind.appspot.com/

Drag and Drop: Drag Digit button to "Drop Here" button to input number
Animation: Click Digit button and then "Drop Here" button
ui change for mobile

1. disable scrolling
2. ui component resize
enable sound on mobile
HW10: mobile

enable sound, dnd and animation on mobile
ui change for mobile
HW9: i18n
HW9: Version change
git ignore change
HW9: i18n merge from local version