Location management: reflect changes to the coordinates on the map

This is a bit aggressive as it changes the globe with every single
character that's entered, but it's better than what we had before.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-ui/locationinformation.h

@@ -39,6 +39,7 @@ public slots:
 	void on_diveSiteNotes_textChanged();
 signals:
 	void informationManagementEnded();
+	void coordinatesChanged();
 
 private:
 	struct dive_site *currentDs;