When position tracking is started by guidance mode, stop it after deactivating guidance mode.
When position tracking is started by guidance mode, stop it after deactivating guidance mode.

svn path=/trunk/KDE/kdeedu/marble/; revision=1199339

oberluz/marble,probonopd/marble,utkuaydin/marble,AndreiDuma/marble,tucnak/marble,rku/marble,tucnak/marble,adraghici/marble,David-Gil/marble-dev,quannt24/marble,tzapzoor/marble,oberluz/marble,utkuaydin/marble,David-Gil/marble-dev,adraghici/marble,AndreiDuma/marble,David-Gil/marble-dev,quannt24/marble,rku/marble,probonopd/marble,utkuaydin/marble,rku/marble,rku/marble,tucnak/marble,Earthwings/marble,AndreiDuma/marble,oberluz/marble,Earthwings/marble,tucnak/marble,AndreiDuma/marble,AndreiDuma/marble,utkuaydin/marble,rku/marble,tzapzoor/marble,quannt24/marble,Earthwings/marble,quannt24/marble,utkuaydin/marble,oberluz/marble,AndreiDuma/marble,quannt24/marble,oberluz/marble,probonopd/marble,utkuaydin/marble,adraghici/marble,probonopd/marble,tzapzoor/marble,tzapzoor/marble,tucnak/marble,probonopd/marble,adraghici/marble,Earthwings/marble,quannt24/marble,tucnak/marble,oberluz/marble,David-Gil/marble-dev,adraghici/marble,rku/marble,probonopd/marble,David-Gil/marble-dev,David-Gil/marble-dev,adraghici/marble,tucnak/marble,Earthwings/marble,tzapzoor/marble,tzapzoor/marble,Earthwings/marble,quannt24/marble,probonopd/marble,tzapzoor/marble,tzapzoor/marble