Updating with code from /home/kwacome/ConceptExtraction-master.

Ignoring files that didn't have meaningful changes, e.g.:
- backupmodel.py, bmodel.py: copies of model.py,
- file.txt: string of characters,
- test.txt: data that cannot be pushed to GitHub,
- *.log: log files from java runs.
test
umls implementation
removed gibberish
umls implementation