Fix subtle bug that caused UITableView selectedIndexPath to not update when using previous / next buttons.

handleActionBarPreviousNext:control now mimics a user scrolling (if necessary) and tapping a specific row.

This way, handleActionBarPreviousNext shares the same code path as tableview:didSelectRowAtIndexPath:

This solves a bug related to the selectedIndexPath and makes sure that new features in the future won't break in this method.