Classification condition db_refs formatted with white-space ie "OMIM: 248200"

Conditions are matched for terms, then these are put into the ```evidence["condition"]["db_refs"] ```In SA Path this looks like:

```
condition: {'value': 'OMIM:248200', 'db_refs': [{'db': 'OMIM', 'id': 'OMIM: 248200', 'idx': '248200', 'url': 'http://www.omim.org/entry/248200', 'summary': 'STARGARDT DISEASE 1; STGD1'}]}
```

The ID here has a space in it, so can't actually be used as a OntologyTerm PK

JA confirms that this is still the case in master/latest code:

```
“id”: “PMID: 10980530",
“id”: “MONDO: 0008840",
```