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

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