new wallet wizard: wallet created in temporary directory and moved to

the destination at the final step

oshelper.h

@@ -0,0 +1,22 @@
+#ifndef OSHELPER_H
+#define OSHELPER_H
+
+#include <QObject>
+/**
+ * @brief The OSHelper class - exports to QML some OS-related functions
+ */
+class OSHelper : public QObject
+{
+    Q_OBJECT
+public:
+    explicit OSHelper(QObject *parent = 0);
+
+    Q_INVOKABLE QString temporaryFilename() const;
+    Q_INVOKABLE QString temporaryPath() const;
+
+signals:
+
+public slots:
+};
+
+#endif // OSHELPER_H