[N9,SYM,BB10] Clear search results when searching for station by location.
[N9,SYM,BB10] Moved all pages into a separate subfolder.
[N9,SYM,BB10] Converted StationSelectPage into tab based page.

Also moved station delegate into separate StationDelegate.qml file.
Fixed few small bugs:

- [N9,SYM,BB10] Restoring last used mode after restarting Fahrplan
  (Departure/Arrival/Now) didn't work.
- [N9] From/to station in timetable mode on N9 wasn't shown due to a typo.