ui: revised project setup wizard

* adjusted some help texts
* moved exclude paths and source file extensions contents to indexed paths selection in project setup wizard
* removed compiler flags from CDB project setup wizard
* added wizard content that shows some info text regarding the purpose of source groups
* renamed ContentSummary to ContentGroup
* fixed issue with CompilationDatabase include path extraction

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

@@ -0,0 +1,115 @@
+#include "qt/window/project_wizzard/QtProjectWizzardContentGroup.h"
+
+QtProjectWizzardContentGroup::QtProjectWizzardContentGroup(
+	QtProjectWizzardWindow* window
+)
+	: QtProjectWizzardContent(window)
+	, m_isForm(false)
+{
+}
+
+void QtProjectWizzardContentGroup::addContent(QtProjectWizzardContent* content)
+{
+	m_contents.push_back(content);
+
+	if (content)
+	{
+		content->setIsInForm(m_isForm);
+	}
+}
+
+void QtProjectWizzardContentGroup::addSpace()
+{
+	m_contents.push_back(nullptr);
+}
+
+void QtProjectWizzardContentGroup::setIsForm(bool isForm)
+{
+	m_isForm = isForm;
+}
+
+void QtProjectWizzardContentGroup::populate(QGridLayout* layout, int& row)
+{
+	if (m_isForm)
+	{
+		populateForm(layout, row);
+		return;
+	}
+
+	layout->setRowMinimumHeight(row++, 10);
+
+	for (QtProjectWizzardContent* content : m_contents)
+	{
+		if (content)
+		{
+			content->populate(layout, row);
+		}
+		else
+		{
+			layout->setRowMinimumHeight(row++, 20);
+		}
+	}
+
+	layout->setRowMinimumHeight(row, 10);
+	layout->setRowStretch(row, 1);
+}
+
+void QtProjectWizzardContentGroup::populateForm(QGridLayout* layout, int& row)
+{
+	layout->setRowMinimumHeight(row++, 10);
+
+	for (QtProjectWizzardContent* content : m_contents)
+	{
+		if (content)
+		{
+			content->populate(layout, row);
+		}
+		else
+		{
+			layout->setRowMinimumHeight(row++, 15);
+		}
+	}
+
+	layout->setRowMinimumHeight(row, 10);
+	layout->setRowStretch(row, 1);
+}
+
+void QtProjectWizzardContentGroup::load()
+{
+	for (QtProjectWizzardContent* content : m_contents)
+	{
+		if (content)
+		{
+			content->load();
+		}
+	}
+}
+
+void QtProjectWizzardContentGroup::save()
+{
+	for (QtProjectWizzardContent* content : m_contents)
+	{
+		if (content)
+		{
+			content->save();
+		}
+	}
+}
+
+bool QtProjectWizzardContentGroup::check()
+{
+	for (QtProjectWizzardContent* content : m_contents)
+	{
+		if (content && !content->check())
+		{
+			return false;
+		}
+	}
+
+	return true;
+}
+
+bool QtProjectWizzardContentGroup::isScrollAble() const
+{
+	return true;
+}