fix parent_folder in Event class
fix parent_folder in Event class

getoutreach/Viewpoint,Windermere/Viewpoint,albertdang/Viewpoint,Datacom/Viewpoint,Tsoondev/Viewpoint,makandra/Viewpoint,bcherrington/Viewpoint,gshutler/Viewpoint,Strauman/Viewpoint,WinRb/Viewpoint,Gerd82/Viewpoint