logic: source groups for project settings

* project can not have multiple source groups with different types
* language of a project is now inferred from source groups
* setting global NameHierarchy delimiter of first sourceGroup in project
* added project settings migrations for source groups
* Add Settings Migration classes (MoveKey, DeleteKey, Lambda)
* Update sample projects with migrations
* added method to config to retrieve sublevel key names
* implemented recursive removing of keys in settings
* moved project files out of top level
* removed solution parsing code as it is not used anymore

fortune cookie message = The secret of getting ahead is getting started.

src/lib/data/parser/TaskParseWrapper.cpp

@@ -4,13 +4,10 @@
 #include "data/PersistentStorage.h"
 #include "utility/scheduling/Blackboard.h"
 #include "utility/utility.h"
+#include "Application.h"
 
-TaskParseWrapper::TaskParseWrapper(
-	PersistentStorage* storage,
-	std::shared_ptr<DialogView> dialogView
-)
+TaskParseWrapper::TaskParseWrapper(PersistentStorage* storage)
 	: m_storage(storage)
-	, m_dialogView(dialogView)
 {
 }
 
@@ -30,9 +27,9 @@ void TaskParseWrapper::doEnter(std::shared_ptr<Blackboard> blackboard)
 {
 	int sourceFileCount = 0;
 	blackboard->get("source_file_count", sourceFileCount);
-    if (m_dialogView)
-    {
-        m_dialogView->updateIndexingDialog(0, sourceFileCount, "");
+	if (std::shared_ptr<DialogView> dialogView = Application::getInstance()->getDialogView())
+	{
+		dialogView->updateIndexingDialog(0, sourceFileCount, "");
     }
 
 	m_start = utility::durationStart();

src/lib/data/parser/TaskParseWrapper.h

@@ -18,10 +18,7 @@ class TaskParseWrapper
 	: public TaskDecorator
 {
 public:
-	TaskParseWrapper(
-		PersistentStorage* storage,
-		std::shared_ptr<DialogView> dialogView
-	);
+	TaskParseWrapper(PersistentStorage* storage);
 	virtual ~TaskParseWrapper();
 
 	virtual void setTask(std::shared_ptr<Task> task);
@@ -33,7 +30,6 @@ private:
 	virtual void doReset(std::shared_ptr<Blackboard> blackboard);
 
 	PersistentStorage* m_storage;
-	std::shared_ptr<DialogView> m_dialogView;
 
 	TimePoint m_start;
 	std::shared_ptr<TaskRunner> m_taskRunner;