ENYO-2500, ENYO-2730: close any opened file in the file editor as it or one of its ancestor is moved/renamed/deleted

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-2500, https://enyojs.atlassian.net/browse/ENYO-2730

* Any opened file in the file editor is automatically closed as:
 * it is moved, renamed or deleted
 * one of its ancestor is moved, renamed or deleted
* Bug https://enyojs.atlassian.net/browse/ENYO-2731 fixed

Checked on Windows 7 : FF/Chrome/Chrome Canary/Opera/Safari/IE 9 & 10

Enyo-DCO-1.1-Signed-off-by: Vincent HERILIER vincent.herilier@hp.com