Version for greater ease of use for downloads from map screen.

• Display rectangles correctly across UTM zones
• Fixed:Nearest waypoints did not always update highlight correctly
• Fixed tile download coudl not be cancelled early.
• Greater robustness through shorter lived connections to the database.
• PlaceFinder now available separately for adding an individual place
• Center on Waypoint after Adding or editing.
•  Added more fields from GPX file: Type, Container, Difficulty, Terrain
• Center on bounds of GPX file if available
• Trial of Option to 'Keep Alive' - prevent automatic shutdown while GPS is running.