CC-5636: Php 5.5: Cannot update repeating show's name if that instance is updated

Made all show fields readonly when editing a repeating instance

airtime_mvc/application/forms/AddShowWhat.php

@@ -75,4 +75,14 @@ class Application_Form_AddShowWhat extends Zend_Form_SubForm
             }
         }
     }
+
+    public function makeReadonly()
+    {
+        $elements = $this->getElements();
+        foreach ($elements as $element) {
+            if ($element->getType() != 'Zend_Form_Element_Hidden') {
+                $element->setAttrib('readonly','readonly');
+            }
+        }
+    }
 }