Changes of version 1.27

Release 1.27 from 11. June '09

reads and writes klickTel Routenplaner 2009 (*.krt) files
reads and writes iGO 8 Track (*.trk) files
reads and writes Holux M-241 Binary (*.bin) files
opens URLs if they're copied into the file field and confirmed with 'Enter' or if they're dragged and dropped into the right part of the window
tries to write all information it has read from GPX files
supports the GPX 1.1 speed extension from trekbuddy
fixes a bug while updating the "Insert position list..." menu, which led to stale entries
uses a more compact storage for dates, such that longer tracks may be loaded