QGIS Server - new project option imageQuality used for JPEG images

* JPEG image quality parameter in OWS / WMS capabilities of the Project properties dialog
* this parameter is only used for jpeg images
* a new parameter IMAGE_QUALITY can be used in the getMap request and will override the project value
Fix outline color in simple marker dxf export
Merge pull request #1403 from mdouchin/getmap_image_quality

QGIS Server - new project option imageQuality used for JPEG images
german translation update
GUI Translation update ja
Replace deprecated QRexExp API

Qt 4.6 saw QRegExp::numCaptures() change to QRegExp::captureCount().
Replace deprecated API
Merge pull request #1427 from simonsonc/qgscolorbutton-deprecated-api

Replace deprecated API
fix #10405 and #10303 partially: removes the scroll area for the style page
Fix crash when QgsDatumTransformStore::transformation returns 0

Simply fix to prevent crash if QgsDatumTransformStore::transformation returns 0. Works for me but has not been further tested!
Merge pull request #1426 from simonsonc/qgsvaluemapconfigdlg-deprecated-api

Replace deprecated QRexExp API
Merge pull request #1429 from christianurich/QgsDatumTransformStore_transformation_0

Fix crash when QgsDatumTransformStore::transformation returns 0
FieldExpressionWidget: add tooltip if expression is larger than widget
remove useless argument
fix 10303: limit expression widget width in data defined properties
Merge pull request #1425 from qgis-jp/pullreq_2_4

GUI Translation update ja
Merge pull request #1420 from Cracert/i18n

VectorLayer, SymbolsList, WidgetShapeburst, XML, parent
Remove relations when a involved layer gets deleted
Updated IT GUI
More coherence in IT GUI