Improved Spice: Timer

I followed @moollaza 's improvements listed in this https://github.com/duckduckgo/zeroclickinfo-spice/issues/1321 Bug Report. Now Timer Spice can:
match numbers with dot char
![schermata 2014-12-05 alle 09 16 31](https://cloud.githubusercontent.com/assets/8344987/5312747/8ce61f92-7c5f-11e4-9c5f-88eb6ceaae76.png)
and match also short names for units 
![schermata 2014-12-05 alle 09 17 14](https://cloud.githubusercontent.com/assets/8344987/5312753/a175d16e-7c5f-11e4-947c-554ef383f63d.png)

I'm not sure we should simply remove the decimal, but rather round the number to the nearest whole second.