Use a clone of the widget element to initialize options set via HTML5 data-attributes.
Use a clone of the widget element to initialize options set via HTML5 data-attributes.

This avoids crashes on IE6+IE7 when cloning the widget element and
fixes #1153.

GrizliK1988/PhotoWidget,blueimp/jQuery-File-Upload,Verde1705/verde1705.github.io,blueimp/jQuery-File-Upload,Verde1705/verde1705.github.io,blueimp/jQuery-File-Upload,blueimp/jQuery-File-Upload,blueimp/jQuery-File-Upload,blueimp/jQuery-File-Upload