REFAC: Replaced unsigned char bare pointer by QSharePointer< unsigned char > in VectorImageModel and ImageModelRenderer.

ENH: Added release rasterized buffer in VectorImageModel::ReleaseMemory; Added some constructor initializations.

COMP: Renamed ../Code/Application/Monteverdi2 Monteverdi2_* CMake variables to Monteverdi2_Catalogue_* to avoid conflicting names with Monteverdi2-project CMake variables.

ENH: Initialized class members on constructors header (especially bare pointers to QObjects set to NULL).

COMP: fix compilation on Mac : do not define a lib and exe with same name, and with the name of the root project

ENH: Disabled splash-screen in _DEBUG mode; Added translation of splash-screen wait message. STYLE: indentation.

ENH: Connected Vector-image to Dataset PropertiesUpdated signal; Fixed bug in DatasetDescriptor::SetImageModelProperties(); Saved no-data fields updates in descriptor XML.

ENH: Specialized AbstractImageModel::BuildContext constructors; Changed ImageProperties inheritance (no mode a QObject); Added no-data flag & value fields to descriptor XML; Added modified flag to ImageProperties and linked it to VectorImageModel.