PNR status and train info

11/12/2015

0.12.53
- fix PNR status
- fix seat availability

0.12.51
- fix running status
- fix arrivals and departures
- fix trains between stations

0.12.5
- show distance and ETA in running status
- add option to copy PNR and to share PNR status
- UI improvements
- bug fixes

0.12.1
- fix compatibility with Android 1.6
- do not show ads if pro version is installed

0.12.0
- Save train schedule automatically