added chris-lea repo and changed all npm references to nodejs

(cherry picked from commit a709a332c3d092d2488ed1e16fc147afa6cdb2f5)
Disabled cert validation for nodejs repo
fixing perm issue with npm registry
(cherry picked from commit 7f537c11d942529d0b634bcc075cf1734fc4815f)

Conflicts:

	playbooks/roles/edxapp/tasks/deploy.yml
Merge pull request #1 from bdero/bdero/cherry-pick-npm-upgrade

added chris-lea repo and changed all npm references to nodejs