Replaced "comment(s)" with "response" where appropriate

EV-543
Changed wording

EV-543
Replaced "comment" with "response" in getCommentType()

EV-543

In addition, did a search using /".*?comment.*?/ to find any other
potential strings using "comment" in it and found nothing that looked
like it should be changed.
Merge remote-tracking branch 'github/feature/EV-543-emp-response-text-change' into liferay6