Role definition is moved from `_initialData` scripts to `01_roles.yml`

In case udisk model is added in the ubConfig.json after initialization step (ubcli initialize is skipped), the roles defined in 005_create_standart_roles_and_els.js will be missed. Thus navigations items which depend on the missed roles will raise an exeption on data migration. It is necessary to define all mandatory roles before the migration of navigation items (in the 01_roles.yml file).