Coordinates close to Locations cannot be entered into TableView

[Joern Ungermann]

If a coordinate close to a known location is manually typed into the TableView, the coordinates are changed to the location. While this is desired when using the mouse, it should not occur for precise input to the Tables

[Reimar Bauer]

Fixed problem with the "magnetic" locations in tableview.

Fix issue #228

→ <<cset ce21225aa025>>