* Sun Jan 25 2015 Martin Kolman - 0.51.1 - add track logging support to the Qt 5 GUI - accessible from Tracks->Record - output to the GPX format - path to the tracklogs folder is shown - option to symlink the tracklogs folder to ~/Documents on Sailfish OS - robust dual temp file storage mechanism - tracklog are restored on next start if shutdown or crash occurs during logging - it is possible to pause started logging - proper landscape and protrait orientation layouts - keep alive support on Sailfish OS - this should assure uninterrupted track recording even with screen turned off - make track logging Python 3 compatible - improved track logging log messages - fix free space dispplay on Android - QML -> Python logging now should be able to handle any QML/Javascript objects