Wizards: Sort

Introduce new QString id() const-API and sort wizards by
[untranslated] category and id. Introduce respective constants.
Rubber-stamped-by: con <qtc-committer@nokia.com>

src/plugins/qt4projectmanager/wizards/librarywizard.cpp

@@ -47,9 +47,10 @@ namespace Qt4ProjectManager {
 namespace Internal {
 
 LibraryWizard::LibraryWizard()
-  : QtWizard(tr("C++ Library"),
+  : QtWizard(QLatin1String("Q.Qt4Library"),
+             tr("C++ Library"),
              tr("Creates a C++ Library."),
-             QIcon(":/wizards/images/lib.png"))
+             QIcon(QLatin1String(":/wizards/images/lib.png")))
 {
 }