Parse and add in UMLS (finally)

[jimhavrilla]

I have done the monstrous task of parsing UMLS at long last, something no one has done heretofore on the PhenCards team. It is a very large index in ElasticSearch ~ 326 MB. Lots of repetitive entries. I'm tempted to ignore duplicates by ignoring original sources in the near future.

[jimhavrilla]

This is now in the site. But will be removed from production until authentication for NLM is set up.