Fix rowData overrite bug
Fix rowData overrite bug

Row data is ovewritten making CSV to contain just the last row
ppossanzini/ui-grid,FernCreek/ng-grid,angular-ui/ng-grid-legacy,FugleMonkey/ng-grid,FugleMonkey/ng-grid,FernCreek/ng-grid,ppossanzini/ui-grid,FernCreek/ng-grid,angular-ui/ng-grid-legacy,angular-ui/ng-grid-legacy,FugleMonkey/ng-grid,ppossanzini/ui-grid