ENYO-3792: forget to move preview/build/install... related code to Harmonia

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-3792

fix code moving that has been forgotten in previous related PR:
Preview/Build/Install... action code has been moved to Harmonia

Enyo-DCO-1.1-Signed-off-by: Vincent HERILIER vincent.herilier@hp.com