Add introduction splash screen to show our beautiful features to newcomers
Developed by fabio.mazza
https://gitpull.it/T1197

Allow to add any Line to Favorites
Developed by fabio.mazza
https://gitpull.it/T1198

Settings: allow to select real-time bus and tram position source (MaTO VS GTRF RT)
Developed by fabio.mazza
https://gitpull.it/T1195

Fix "pull refresh" when coming from map
Fixed by fabio.mazza
https://gitpull.it/T1196
