ENYO-1336: New Hermes nodes are now inserted at the right place in the file tree

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-1336

New folders and files are now inserted accordingly to their name in the file tree and no more at the end of their parent folder.
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