ENYO-2496: "Packages.js" files are only managed inside an ares project

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-2496

As projects are created, a related folder path could be created to reach it and "package.js" files are no more added for any folders of this path.

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