Timer: fix input for foreign keyboards

Pro: works for non-qwerty keyboards
Con: a "backspace" effect:
![test](https://cloud.githubusercontent.com/assets/4411471/3958152/d675f77e-271c-11e4-839d-fe07307fc739.gif)
(this isn't really a big deal, just a caveat)
It's not right [here](https://github.com/duckduckgo/zeroclickinfo-spice/pull/1020/files#diff-186e35eeb541cc28cf6434a65c435dceR208)?