calcluate font size during initialization
calculate progress value when progress changes rather than during rendering
no need to calculate font size again and again
calculate m_scaleBarDistance when bounding box changes rather than during painting
do less work during painting and more when viewport is changed
no need to optimize for extremely rare corner cases
have only one draw statement
GeoDataLinearRing: actually cache the rangeCorrected
GeoGraphicsScene: handle MultiGeometries as well

BUG: 318512
SVN_SILENT made messages (.desktop file)
Add a button to clear via stations.

REVIEW: 110149
BUG: 312932
Style tweaks.
Fall back to the default map theme if a map theme gets deleted.
Merge branch 'master' of git://anongit.kde.org/marble
Routing layer spherical projection panning
Fixed placemarks not visible when panning