CSR-1454: minor tweak to avoid returning empty strings which were creating extra empty markup

src/helpers/cms-content-helper.js

@@ -296,7 +296,7 @@ export function doesCopyContainTextLink(copy) {
  * @returns array of strings
  */
 export function splitCopyOnCMSPlaceHolder(copy) {
-    return copy.split(/{(.*?)}/g);
+    return copy.split(/{(.*?)}/g).filter(str => str.length > 0);
 }
 
 /**