Add show all enable/disable html string settings.

web/lib/msgsconfig.ssjs

@@ -4,3 +4,5 @@ next_msg_html="Next Message";
 prev_msg_html="Previous Message";
 next_page_html="NEXT";
 prev_page_html="PREV";
+showall_subs_enable_html="Show all subs";
+showall_subs_disable_html="Show subs in new scan only";