Moved Spinner into ActionBar & fixed 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.
* 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