Animation after remove added, fixed focus problem

Now we can add own animation to the removed element.
Fixed FF problem with focused remove icon + ENTER press.

Removed element gets a .removed class. When an element has .removed class
we disable some actions ->

if(X.hasClass("removed")) return;
Small fix for confirm box

Added fix for confirm box overlay and added
func to remove the box by pressing ESC key.
Merge pull request #15 from karolgorecki/master

Update Widget
Update README.md
Jasmine tests and ConfirmBox fixes
Merge pull request #17 from MaronMariusz/master

Translate Widget Updates
i18n: rebuild select lag option
i18n: Fix extending options
i18n: New option for 'existing data'