Move Spinner into ActionBar & fix typo

* Moved the Spinner for year selection into the ActionBar.  
Gives more place for the entries, doesn't look so out-of-place and the user expects it, as it is a common UI pattern.
![bildschirmfoto 2014-04-19 um 12 41 03](https://cloud.githubusercontent.com/assets/423373/2748211/3e009106-c7af-11e3-940d-50b81fc38dfb.png)

* Fixed a typo (in comments, string ressources and variables): Holyday -> Holiday.  
You could argue that days like christmas are holydays. But for sure not days like the German Unification Day. :P