logic: Ask user before reparsing the project

While the message box with the question is visible the ui is blocked. A message appears when:
* when project was edited
* when preferences were edited
* when project file has more recent changes than db
* when db has a different version than Coati

src/lib/component/view/MainView.cpp

@@ -7,3 +7,8 @@ MainView::MainView()
 MainView::~MainView()
 {
 }
+
+int MainView::confirm(const std::string& message)
+{
+	return confirm(message, std::vector<std::string>());
+}

src/lib/component/view/MainView.h

@@ -2,6 +2,7 @@
 #define MAIN_VIEW_H
 
 #include <string>
+#include <vector>
 
 #include "component/view/ViewLayout.h"
 
@@ -16,6 +17,9 @@ public:
 	virtual void setTitle(const std::string& title) = 0;
 	virtual void activateWindow() = 0;
 	virtual void updateRecentProjectMenu() = 0;
+
+	virtual int confirm(const std::string& message);
+	virtual int confirm(const std::string& message, const std::vector<std::string>& options) = 0;
 };
 
 #endif // MAIN_VIEW_H