ui: project wizzard design

* switched to QGridLayout for wizzard content layouting
* distinguish scrollable windows based on content
* content can define window size
* removed QtApplicationSettingsScreen, now done via QtProjectWizzardWindow and QtProjectWizzardContentPreferences
* added new project icon

src/lib_gui/qt/window/project_wizzard/QtProjectWizzardContentPreferences.cpp

@@ -0,0 +1,65 @@
+#include "qt/window/project_wizzard/QtProjectWizzardContentPreferences.h"
+
+#include <QSysInfo>
+
+QtProjectWizzardContentPreferences::QtProjectWizzardContentPreferences(ProjectSettings* settings, QtProjectWizzardWindow* window)
+	: QtProjectWizzardContent(settings, window)
+	, m_headerSearch(nullptr)
+	, m_frameworkSearch(nullptr)
+{
+	m_headerSearch = new QtProjectWizzardContentPathsHeaderSearchGlobal(settings, window);
+
+	if (QSysInfo::macVersion() != QSysInfo::MV_None)
+	{
+		m_frameworkSearch = new QtProjectWizzardContentPathsFrameworkSearchGlobal(settings, window);
+	}
+}
+
+void QtProjectWizzardContentPreferences::populateWindow(QGridLayout* layout)
+{
+	int row = 0;
+
+	layout->setRowMinimumHeight(row, 10);
+	row++;
+
+	m_headerSearch->populateForm(layout, row);
+
+	if (m_frameworkSearch)
+	{
+		m_frameworkSearch->populateForm(layout, row);
+	}
+
+	layout->setRowMinimumHeight(row, 10);
+}
+
+void QtProjectWizzardContentPreferences::windowReady()
+{
+	m_window->updateTitle("PREFERENCES");
+	m_window->updateDoneButton("Save");
+	m_window->hidePrevious();
+}
+
+void QtProjectWizzardContentPreferences::load()
+{
+	m_headerSearch->load();
+
+	if (m_frameworkSearch)
+	{
+		m_frameworkSearch->load();
+	}
+}
+
+void QtProjectWizzardContentPreferences::save()
+{
+	m_headerSearch->save();
+
+	if (m_frameworkSearch)
+	{
+		m_frameworkSearch->save();
+	}
+}
+
+bool QtProjectWizzardContentPreferences::isScrollAble() const
+{
+	return true;
+}