classes/ambassador.php and classes/default.to.php removed
account_user concept added
Merge branch 'master' of https://github.com/mario-figueira/timetochange__compaigns
several things related do the add user to account view
  added account and role object to account_user.VO
  account.REPO return a complete account_user.VO object
database schema change  + related field name tunning