DownloadRegionDialog: Display warning about tiles count download limit in the dialog itself instead of showing a message box each time the limit is crossed. This way users operating at the limits do not need to click the message box away each time they change something too much.
DownloadRegionDialog: Display warning about tiles count download limit in
the dialog itself instead of showing a message box each time the limit is
crossed. This way users operating at the limits do not need to click the
message box away each time they change something too much.

Suggested by Michael G. Hansen.

svn path=/trunk/KDE/kdeedu/marble/; revision=1118986

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