* @cfg {String} csvCols - use '*' to override grid coluns
* @cfg {String} csvTitles - use '*' to override grid coluns
* @cfg {String} hiddenCols - default 'show' (use 'hide' to not display them on download)
* @cfg {String} csvCols - use '*' to override grid coluns
* @cfg {String} csvTitles - use '*' to override grid coluns
* @cfg {String} hiddenCols - default 'show' (use 'hide' to not display them on download)