LPS-45803 - DisplayTerms.KEYWORDS is called from non-static context

Hey @Preston-Crary,

Attached is an update for http://issues.liferay.com/browse/LPS-45803.  Can you check these changes I made for changing this constant to make sure I did not miss anything?  If it is good, can you send it back?  Nate is still reviewing http://issues.liferay.com/browse/LPS-45700 and these changes are dependent upon that.

Please let me know if you have any questions.  Thanks!