Add unit-test coverage for creating a Collecting Event with its related records. - [ ] Add existing Locality - [ ] Create new Locality - [ ] Add Collector (existing agent) - [ ] Create new Collector (new agent) - [ ] Add multiple Collectors - [ ] Add existing Collecting Trip - [ ] Create new Collecting Trip - [ ] Add PaleoContext
Add unit-test coverage for creating a Collecting Event with its related records.