Issue #3331023 Fix errors and warnings in phpcs

Closes #3331023

js/revision_graph.js

@@ -14,7 +14,7 @@ var myTemplateConfig = {
   colors: ['#00c58e', '#0096db', '#ff6f40'],
   commit: {
     message: {
-      displayHash: false
+      displayHash: FALSE
     }
   }
 };