Biolink category assignment heuristic may return wrong category

[isuen]

e.g. if search for diabetes, can get results like:

{
"id": "NDEX:8aea820e-873c-11e5-b435-06603eb7f303_87830889",
"name": "Laboratory of Molecular and Cellular Biology, National Institute for Diabetes, Digestive, and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892.",
"category": "disease",
"synonyms": [],
"definition": null
}

*edited to reflect some changes to the beacon