ENYO-2499: After any file action, file tree should focus on the related node

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-2499

* node is highlighted when its a new/renamed/copied/moved file/folder;
* parent node is highlighted when a node is deleted

Checked on Windows 7 : FF/Chrome/Chrome Canary/Opera/Safari/IE 9 & 10

Pending https://github.com/enyojs/ares-project/pull/365 to be reviewed

Enyo-DCO-1.1-Signed-off-by: Vincent HERILIER vincent.herilier@hp.com