ui: Rewrote project setup to wizzard

* QtProjectWizzard handles window managment logic of project setup
* QtProjectWizzardWindow is used in every step and displays QtProjectWizzardContent
* QtProjectWizzardContent is the base class for all differnt content types
* Removed Singleton from ProjectSettings
* ProjectSettings are created by wizzard and QtProjectWizzardContent can access and load
* added project type selection at start of wizzard
* added summary at end of wizzard
* show global search paths in setup and summary
* fixed layout problems after font switch
* fixed scrolling and resizing of QtDirectoryListBox
* separated QtLocationPicker to own class

src/lib_gui/qt/window/project_wizzard/QtProjectWizzardWindow.h

@@ -0,0 +1,44 @@
+#ifndef QT_PROJECT_WIZZARD_WINDOW_H
+#define QT_PROJECT_WIZZARD_WINDOW_H
+
+#include "qt/window/QtSettingsWindow.h"
+#include "settings/ProjectSettings.h"
+
+class QPushButton;
+class QtProjectWizzardContent;
+
+class QtProjectWizzardWindow
+	: public QtSettingsWindow
+{
+	Q_OBJECT
+
+signals:
+	void next();
+	void previous();
+
+public:
+	QtProjectWizzardWindow(QWidget *parent);
+
+	QtProjectWizzardContent* content() const;
+	void setContent(QtProjectWizzardContent* content);
+
+	// QtSettingsWindow implementation
+	virtual void setup() override;
+	virtual void populateWindow(QWidget* widget) override;
+
+	void enableNext();
+	void disableNext();
+	void disablePrevious();
+	void hidePrevious();
+
+private:
+	QtProjectWizzardContent* m_content;
+	QPushButton* m_previousButton;
+
+private slots:
+	void handleCancelButtonPress();
+	void handleUpdateButtonPress();
+	void handlePreviousButtonPress();
+};
+
+#endif // QT_PROJECT_WIZZARD_WINDOW_H