Added test case classes and some test methods for MainActivity, DbxFolderContentListActivity, DbxListItem and DbxManager
[KW,MS]{other} - modified .gitignore files
[MM,PS]{story} - Added new GPSTracking Class and fixed some issues
[MM,PS]{story} - Added new GPSTracking Class and fixed some issues
Merge remote-tracking branch 'origin/maps' into maps
[MM,PS]{story} - merging