core: implemented yes/no to all when closing multiple modified projects

app/project/projectsavemanager.cpp

@@ -25,7 +25,7 @@
 
 OLIVE_NAMESPACE_ENTER
 
-ProjectSaveManager::ProjectSaveManager(Project *project) :
+ProjectSaveManager::ProjectSaveManager(ProjectPtr project) :
   project_(project)
 {
   SetTitle(tr("Saving '%1'").arg(project->filename()));

app/project/projectsavemanager.h

@@ -30,16 +30,16 @@ class ProjectSaveManager : public Task
 {
   Q_OBJECT
 public:
-  ProjectSaveManager(Project* project);
+  ProjectSaveManager(ProjectPtr project);
 
 signals:
-  void ProjectSaveSucceeded(Project* p);
+  void ProjectSaveSucceeded(ProjectPtr p);
 
 protected:
   virtual void Action() override;
 
 private:
-  Project* project_;
+  ProjectPtr project_;
 
 };