- new welcome dialog message.
- new check units text.
- for US and UK, default to imperial.
- for fragments, fix handling of onCancel. No need
to handle onCancel at the dialog level.
- for TrackEdit and MarkerEdit, use windowSoftInputMode=stateHidden
- improve layout for the map in MapFragment.
- fix text size for API level < 14.
- fix bug when inserting a statistics marker with a modified name