Add `\subject` endpoint to access non-person GND data (see #68)
Move auto-suggest samples into tabs, add /subject sample (see #68)
Use ngram analyzer for subject labels, cleanup, and tests (see #68)
Merge pull request #284 from fsteeg/issue-68-subject

Add `\subject` endpoint to access non-person GND data
Merge branch 'master' into hbz01-to-lobid_neu

Conflicts:
	lodmill-ld/src/main/resources/index-config.json
Replace spaces with tabs
Change property isbn10 to isbn