Prevent click on empty greek and morph in rows

app/components/words/word-row.js

@@ -9,6 +9,9 @@ export default class WordsWordRowComponent extends Component {
 
   @action
   select(word) {
+    if (word.strongsNumber == -1 || word.strongsNumber == null) {
+      return;
+    }
     this.selectWord.select(word);
     this.router.transitionTo('verse.word', word.strongsNumber);
   }