Implement animation for removing pass cells

TODO item done in this commit (exported by TODO in Python):
  (TODO grabber) 040: [DONE] Handling pass cell pan began, start removing animation.
  (TODO grabber) 041: [DONE] Handling pass cell pan changed, record translation and animate.
  (TODO grabber) 042: [DONE] Handling pass cell pan ended, stop removing animation.
  (TODO grabber) 043: [DONE] Handling pass cell pan ended, check if translation reach 50%.
  (TODO grabber) 044: [DONE] Handling pass cell pan ended, may directly access model instead of delegate.
  (TODO grabber) 045: [DONE] Handling pass cell pan changed, adding text 'Swipe/Release to remove'.