Update build.xml.

Updated changelog.

Added Version 1.4.2 and Release Date 2011-02-20.

UI Widget: Re-use widget by default.

Version 1.4.0, Release Date 2011-01-26

Added release date.

Added new release date and version.

Added more missing docs.

Fixed so queue widget displays the drag/drop message if file queue is…

… emptied.

Added new rename file support for jQuery queue widget, click on a fil…

…e name to rename it if it's enabled.