Added @deprecated for BaseAbstractType and use correct "blockPrefix"

Form/BaseAbstractType.php

@@ -16,6 +16,7 @@ use Symfony\Component\OptionsResolver\OptionsResolverInterface;
 
 /**
  * @author William DURAND <william.durand1@gmail.com>
+ * @deprecated use AbstractType directly
  */
 abstract class BaseAbstractType extends AbstractType
 {

Form/Type/ModelType.php

@@ -225,7 +225,7 @@ class ModelType extends AbstractType
      */
     public function getBlockPrefix()
     {
-        return 'entity';
+        return 'model';
     }
 
     public function getParent()