bug: Add Missing Fields

Set _value in DynamicFormEntryAnswer even when value is empty.

include/class.dynamic_forms.php

@@ -1347,11 +1347,13 @@ class DynamicFormEntryAnswer extends VerySimpleModel {
     }
 
     function getValue() {
-        if (!isset($this->_value) && isset($this->value)) {
+
+        if (!isset($this->_value)) {
             //XXX: We're settting the value here to avoid infinite loop
             $this->_value = false;
-            $this->_value = $this->getField()->to_php(
-                $this->get('value'), $this->get('value_id'));
+            if (isset($this->value))
+                $this->_value = $this->getField()->to_php(
+                        $this->get('value'), $this->get('value_id'));
         }
 
         return $this->_value;