commit fixes c/o Franz Penz regarding (1) double quotes in the titles and qtips (2) support display of html in the treenode. Modify Tool menu in the toolbar to work with the treepanel folders if there is no selected file on the grid
allow cases where file storage is readable by the public, add better error handling for failed file/folder move, fix checks on create_url and share_folder features, fix bug in file delete caused by missing param variable