initial car selection re-design
fake an expandablelist using custom views.
finalize new car selection view. closes #165
remove /dev/ URL
fix some issues with ListTracksFragment
add callback handler for successful track upload.
ListTracksFragment items are now updated on successful upload.
extract WPS call to new WPSClient class
decouple Track encoding from UploadManager -> new TrackEncoder class
Merge pull request #198 from matthesrieke/develop

class refactoring