Removed multiple dialog steps in Source Group setup (issue #723) (#913)

* removed QtSourceGroupWizard, QtSourceGroupWizardPage and context types
* removed isInForm flag of QtProjectWizardContent
* added check of empty source paths
* set project window as parent for message boxes, so they don't get hidden behind main window
* fixed issues when removing and duplicating source groups
* updated project setup tests to no steps

src/lib_gui/qt/project_wizard/QtProjectWizard.h

@@ -8,7 +8,6 @@
 #include "ApplicationSettings.h"
 #include "ProjectSettings.h"
 #include "QtProjectWizardWindow.h"
-#include "QtSourceGroupWizard.h"
 #include "QtWindow.h"
 
 class QListWidget;
@@ -40,15 +39,9 @@ protected:
 	virtual void handlePrevious() override;
 
 private:
-	template <typename SettingsType>
-	void executeSourceGroupSetup(std::shared_ptr<SettingsType> settings);
-
 	QtProjectWizardWindow* createWindowWithContent(
 		std::function<QtProjectWizardContent*(QtProjectWizardWindow*)> func);
 
-	QtProjectWizardWindow* createWindowWithContentGroup(
-		std::function<void(QtProjectWizardWindow*, QtProjectWizardContentGroup*)> func);
-
 	void updateSourceGroupList();
 	bool canExitContent();
 
@@ -56,7 +49,6 @@ private:
 
 	std::shared_ptr<ProjectSettings> m_projectSettings;
 	std::vector<std::shared_ptr<SourceGroupSettings>> m_allSourceGroupSettings;
-	std::shared_ptr<QtSourceGroupWizardBase> m_sourceGroupWizard;
 	ApplicationSettings m_appSettings;
 
 	bool m_editing;