ENYO-3681: fixed broken rename


* ENYO-3681: open renamed file immediately 
* ENYO-3681: explicitely removeTab in forgetDoc...
* ENYO-3681: clarified event names between HermesFileTree and Ares
* ENYO-3681: next is no longer optional

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-3681

Enyo-DCO-1.1-Signed-off-by: Dominique Dumont <dominique.dumont@hp.com>