src: Various fixes from testing

* fixed deleted project could still be selected in the recent project menu
* fixed project file not loaded when declining for reload
* fixed main in tutorial description not clickable
* fixed clang warnings
* fixed commands not showing up in autocompletion
* fixed classes were expanded when activating aggregation
* fixed crash when messagelisteners tried to unregister after messagequeue was destructed

src/lib/Project.cpp

@@ -35,7 +35,7 @@ Project::ProjectState Project::load(const FilePath& projectSettingsFile)
 	m_state = PROJECT_NONE;
 
 	bool success = true;
-	if (!projectSettingsFile.empty() && projectSettingsFile != m_projectSettingsFilepath)
+	if (!projectSettingsFile.empty())
 	{
 		success = ProjectSettings::getInstance()->load(projectSettingsFile);
 	}