Dropping unused function argument.
Prevent unwanted progress event on chunked uploads. Closes #2082.
Make sure the preview rendering resolves. Fixes #2069.
Update to jQuery 1.9.1.

This allows to remove the workaround introduced here:
https://github.com/blueimp/jQuery-File-Upload/commit/d64d95a329850415258
767b3eb5c55f147e31aee
Upgraded jQuery UI widget factory (only version change).
Updated download and support information.
Skip transitions for invisible nodes. Fixes #2105.

This is not only more efficient, but also required since it seems
transition events are not fired for invisible elements.
Simplify click event handler selectors. Closes #2122.
Add a third parameter to the constructor to localize error messages. Closes #2140.
Fixed tests following the UI CSS class changes.
Replace parseInt with Math.floor in the progress calculations.
Move the autoUpload option into the basic plugin.
Remove unnecessary _destroy handler.

Event handlers are cleaned up automatically on destroy when registered
via the Widget Factory's _on() method.
Respect the autoUpload setting and process only when submitting.
Expose the jqXHR.abort() method on the data argument.
Expose the state of the jqXHR object as state() method on the data argument.
Expose global progress via .fileupload('progress') method.
Prevent new submit while in pending state.
Make sure the submit and abort convenience methods always return a jqXHR object.
Refactored progress calculation.

Expose the progress data via .progress() method on the data argument.
Add convenience methods to files uploaded via send API call.