"milk protein" matches drug with no data

## Description

```
print (find_drugs("milk protein".split()))
```

returns

```
[({'match_type': 'exact', 'matching_string': 'milk protein'}, 0, 2)]
```

## Expected Behaviour

if this is not a drug, should not be matched. The dictionary of strings and the dict of drug data have got out of sync. Solution will be in the scripts in the `harvesting...` folder.