Python: check for pyside tools after installation

Change-Id: Icf9ae0ec08a78efc51216daa3304e76f8e812d5f
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/python/pyside.h

@@ -40,13 +40,17 @@ namespace Internal {
 
 class PySideInstaller : public QObject
 {
-    Q_DECLARE_TR_FUNCTIONS(Python::Internal::PySideInstaller)
+    Q_OBJECT
 
 public:
     static PySideInstaller *instance();
     static void checkPySideInstallation(const Utils::FilePath &python,
                                         TextEditor::TextDocument *document);
 
+
+signals:
+    void pySideInstalled(const Utils::FilePath &python, const QString &pySide);
+
 private:
     PySideInstaller();