EXT-7511 FIXED Fixed disappearance of selected item's border in flatlistviews.

- This issue was a regression caused by EXT-8052. Bug was caused by setting visibility of border to FALSE without respect to boolean argument passed to setNoItemsCommentVisible().
setNoItemsCommentVisible() is called on every rearrange, so border disappeared quite often. Fixed it by setting border's visibility depending on passed argument.

Reviewed by Mike Antipov at https://codereview.productengine.com/secondlife/r/764/

--HG--
branch : product-engine