Add searchable OWL attribute to concepts to hide from filter concept dropdown. #315

Extracted concept dropdown to component and reused
fix inmemory concept for searchable property
test with tesseract
Merge branch 'master' into term-to-vertex

Conflicts:
	integration-test/src/test/java/io/lumify/it/UploadImageFileIntegrationTest.java
	integration-test/src/test/java/io/lumify/it/UploadVideoFileIntegrationTest.java