Update 2.1.0

+ Automatic synchronization between EXIF/IPTC and XMP data when saving
+ Support for XMP sidecar files
+ Support for timezone of taken date
+ Support for Google Maps terrain map
+ Support for Flickr geodata in keywords
+ New Spanish translation
* New designed data dialog
! Some data hasn’t been copied when copying data in data dialog
! Excpetion when reading some GPS data
! Images taken in portrait format sometimes has been exported to Google Earth in lansdcape mode
! Problems with language specific characters in filenames regarding Google Earth export
! Excpetion when hiding visible tracks

Additional changes at the user interface and other bugfixes