logic: maven project setup

* added option to create a Coati project from a Maven POM file
* show list of indexed file paths in maven project setup
* use FileManager to detect indexed files in project setup (except cdb)
* added Maven path to preferences window and added path detectors.
* fixed: QtDialogView::hideStatusDialog now also hides loader in status bar.
* refactored ProjectType

fortune cookie message = If you continually give, you will continually have.

src/lib/data/TaskShowStatusDialog.h

@@ -14,7 +14,7 @@ public:
 	TaskShowStatusDialog(
 		const std::string& title,
 		const std::string& message,
-		DialogView* dialogView
+		std::shared_ptr<DialogView> dialogView
 	);
 
 	virtual ~TaskShowStatusDialog();
@@ -27,7 +27,7 @@ private:
 
 	const std::string m_title;
 	const std::string m_message;
-	DialogView* m_dialogView;
+	std::shared_ptr<DialogView> m_dialogView;
 };
 
 #endif // TASK_SHOW_STATUS_DIALOG_H