added 'parentPath' to Groups and 'groups' to models so objects know their parents
Merge branch 'acl'
(fix) save parentPath
Merge branch 'acl'
chore(core/model-loader): jshint fixes
feat(groups): personal user group
fix(User.signUp): search for World group type
TMP
feat(User.signUp): automatically create rootGroup
fix(group-manager): add forgotted callback call
fix(group-factory): initial fix for restify read permissions
chore(group-manager): temporarily disable REST api for guests
fix(group-manager): don't leak internal errors to public