Changes from 4.7 to 4.9.

Change History:
Changes made from version 4.80 to 4.90:
Fixed issue with a data field in nuvi mode while navigating with the device in landscape orientation.
Fixed issue with overlapping text when reviewing certain geocaches.

Changes made from version 4.70 to 4.80:
Improved EXIF compass heading data in camera photos (650 and 650t models).
Fixed issue with changing profiles when the altimeter dashboard is active on the main menu.
Fixed issue with certain characters on the Czech or Polish keyboards in landscape orientation.
Fixed issue with shortcuts that enable or disable maps remaining highlighted after being selected.
Fixed issue with displaying tracks on the map after performing an area calculation.
Fixed issue with saving a track's 'show on map' status across a power cycle.
Fixed potential issue with renaming tracks or routes.
Fixed potential issue with viewing geocache descriptions in night mode.