gps: fixed code style, more informative and clean messages
gps: more cleanup, some more info in 'gps status'
mavlink: EPH/EPV casting issue fixed
mavlink: bugfix
Look for the appropriate images in the uploader
Merge pull request #414 from julianoes/fix_io_upload_filenames

Look for the appropriate images in the uploader
Merge pull request #415 from PX4/gps_cleanup

GPS cleanup