ENYO-2796: restore HermesFileTree DnD for MSIE 10

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-2786

will fully works after enyo being updated up to this commit 9ead125f223d32bb0308f010a10b27bc221d69a6 [9ead125]  (depends on buttons status to be taken in account by enyo/touch/msevents.js)

Enyo-DCO-1.1-Signed-off-by: Vincent HERILIER <vincent.herilier@hp.com>