blueimp/jQuery-File-Upload — pull request #3331 by darknessm0404 (2014-09-01 13:29:40+00:00)
Title: dropZone fix for IE10+ compatibility

Prevent default also on "dragenter" event so it can work with IE10+

Change tested (and working) on:
IE10 (doesn't work with IE9 and lower)
Chrome 36.0.1985.143 m
Firefox 31.