VIVO-117 Turn off HTTP caching unless explicitly enabled in runtime.properties.

example.runtime.properties

@@ -179,6 +179,19 @@ RDFService.languageFilter = true
 #
 # languages.selectableLocales = en, es, fr
 
+#
+# Tell VIVO to generate HTTP headers on its responses to facilitate caching the 
+# profile pages that it creates. 
+#
+# For more information, see 
+# https://wiki.duraspace.org/display/VIVO/Use+HTTP+caching+to+improve+performance
+#
+# Developers will likely want to leave caching disabled, since a change to a
+# Freemarker template or to a Java class would not cause the page to be 
+# considered stale.
+#
+# http.createCacheHeaders = true
+
 #
 # For developers only: Setting this option to "true" slows down VIVO performance.
 #