add has_many for all_interventions
add has_many for all_interventions

clinwiki-org/clinwiki,tibbs001/clinwiki-1,tibbs001/clinwiki-1,clinwiki-org/clinwiki,clinwiki-org/clinwiki,clinwiki-org/clinwiki,clinwiki-org/clinwiki,tibbs001/clinwiki-1