ENYO-3001: Fix circular reference in JSON data

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-3001

ENYO-2756 brought a different set of informations that does not generate such circular reference issue.
So a simplification of the data transmited could be applied.

Enyo-DCO-1.1-Signed-off-by: Vincent HERILIER vincent.herilier@hp.com