OnTheFly: adding displayBadge option to replace button by badge

When using displayBadge=true, you need to pass buttonText=string with badge content.

Limitation: onTheFly cannot use directly PersonRenderBox to display badge,
because it don't have person object in props !

src/Bundle/ChillMainBundle/Resources/public/vuejs/OnTheFly/App.vue

@@ -4,6 +4,7 @@
         :id="context.id"
         :action="context.action"
         :buttonText="options.buttonText"
+        :displayBadge="options.displayBadge === 'true'"
         @saveFormOnTheFly="saveFormOnTheFly">
     </on-the-fly>
 </template>